The newer engine has computer control, but the fuel computer seems like it could be easily retained / heatshielded inside the engine compartment. The fuel injectors are calibrated at the time of production and the data is stored in the form of an IMA code. We use cookies to ensure that we give you the best experience on our website. The 6-speed manual gearbox is not a very successful design. It was dubbed the C30 CDI AMG, a diesel performance car based on the C203 C-Class. Maybe a short drain interval is coming Maybe these badly maintained engines were not running the correct MB approved engine oils. Mar 2, 2010. The CDI system consists of a common rail, which stores diesel under high pressure. Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. OM612 has two versions, one was the 2.7 litre that produced 160 horsepower and 370 NM of torque. Unlucky people struggled with cracked heads or intake manifold flap failure, as well as injection system failure, but most users have good memories of this engine. By the way, the V8 used later was closely related to this design. The 2.9 L (2,874 cc) was used in the 310D and 410D Mercedes-Benz T1 and the Phase 1 Mercedes-Benz Sprinter vans (where it was modified for direct injection), the Ssangyong Musso, Korando and Rexton range and even in the 1996-1999 models of the E-class. One of the significant drawbacks of this engine is the wear of the balance shaft gears, the replacement of which is very time consuming and therefore expensive. Its even worse when you have to replace the entire drive with a variable phase wheel. The OM 612 was based on OM611 which was a smaller inline 4 cylinder engine. It depends on the approach to the car. i work for a merc. Oil leaks are best fixed as they occur. There's a mod to remove this. Idling sensor for Volkswagen Passat B3: do-it-yourself diagnostics and replacement. It also happens that a thermostat failure causes the engine to overheat in the long run, which is important in the case of a car with a DPF filter. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. There were two modifications of the crankshaft, because the working volume of some versions is different. Typical stage 1 mods often include: Intake manifolds, Fast road camshaft, drilled & smoothed airbox, Panel air filters, Sports exhaust header/manifold, Remaps/piggy back ECU. Short journeys can quickly coke up these engines, which leads to carbon build up in the intake manifold and all over these plastic swirl flaps. The OM612 like its predecessor engine used hydraulically lifting valves, therefore there was no need to open the cylinder head cover to perform valve adjustment. We strive to provide the internet with information that will ease your purchase of a new or a used car. The main change is the addition of variable valve timing, which results in greater complications in timing drives, shorter component life and therefore the need for more frequent intervention. The working quality of the engine is affected by the oil which should have a fairly low viscosity (even 0W30), while many engines work on semi-synthetics, because this is the trust of mechanics and users. Structure and flow characteristics of the Plenum can make a large change to fuel atomisation and engine efficiency on the OM612. Mercedes Benz started using Common rail diesel injection in 1997. Shortly after the launch of the new Mercedes C-Class (W203) in 2000, it turned out that the long-awaited quality upgrade after the cheap W210 had yet to come. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. It was also turbocharged with an air-cooled intercooler, the 2.7-litre displacement effortlessly produced more than 160 horsepower. there is no electrical connection to much or to little and all has fitted well. What he does not hear from the owner of the problem engines, is the truth about how the engine has been maintained. The Mercedes OM602 engine is a 5-cylinder diesel engine of 2.5 or 2.9 L (2,497 or 2,874 cc). Plastic painting tips for car interior and exterior.Read more Definitions of car styling looksRead more Aftermarket supercharger and turbo kits for Audi, Mercedes and BMWRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK TorqueCars / www.torquecars.com Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains. I'm not sure what the diagnosis is. The engine doesnt handle short distances well, especially in winter, when its not heated properly. Therefore, Mercedes Benz diesel engines are the best engines. The OM611, OM612 and OM613 turbo-diesel engines had cast iron blocks, alloy cylinder heads, common-rail injection, double overhead camshafts (duplex chain-driven), four valves per cylinder (actuated by tappets) and exhaust gas recirculation. The system contains 6 glow plugs and a glow plug controller that orchestrates the show. styling and friendly car banter. Save my name, email, and website in this browser for the next time I comment. The main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. Here is a quick summary of the contents. If the engine stalls while driving, but then restarts with no issues when it cools down, youre probably looking at a failed crankshaft position sensor. Current Merc: 2009 C220cdi sport estate B BigDz The EGR valve can get blocked up by a mixture of carbon and oil deposits. We have tips on removing carbon build up. Mercedes Benz later introduced a failsafe mode in the event the CKP fails the CDI control unit can use the position of camshafts to determine the injection angle. Modification OM 612 DE 27 LA: 5-cylinder, 2685 cm3, bore and stroke 88 and 88.3 mm, respectively, generation CDI II generation. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. Tuning the Mercedes OM612 and best OM612 performance parts. ..serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply.. only thing i can say is they do seem to have poor service history. These engines have no issues reaching upwards of 300,000 miles (ca. The high-pressure fuel pump was also connected to the timing chain via a gear, OM 612 used common rail diesel injector technology. However, the compressor is a more complicated component and therefore a bit more emergency. As the efficiency of the new generation engines was increased, there was not enough heat to heat the passenger compartment at low temperatures. Replace your fuel pump's fuse in the fuse box. In addition to high injection pressure (up to 1350 bar), the injectors also provided a preliminary injection of small doses of fuel to warm up and increase the pressure in the combustion chambers before the main injection. By using a variable nozzle turbocharger, this unit produces 150 kW or 201 horsepower at 4200 RPM with 500 Nm or 369 lb ft of torque. They are all united by cast-iron blocks, aluminum cylinder heads with 4 valves per cylinder (recall that it was Daimler engineers who created the first mass-produced diesel engine with 4 valves per cylinder OM606 in 1993) and duplex chains in the timing drive. OM612 5 cylinder 2.7L engine into this: 190D 2.5 turbo? The only solution is to replace the faulty CKP sensor. OM612 Engine Harness Remove and Replace. An oxidation catalyst is used to clean the outlet gases. Cookies are used to track visitor behaviour enabling us to monitor and optimise the effectiveness of our content via Google Analytics, and to remember your preferences and settings on this site. Including the OM648 diesel. A faulty MAF sensor on the OM612 engine will lead to rough starting, erratic idling behaviour, engine stalling after starting, overall erratic engine behaviour and even black exhaust notes due to rich air/fuel mixture. (v6 diesel,all models,year range is 2005-2008 so far). Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. Please watch our video which covers the 5 principles of tuning your car. Join our forum today and benefit from over 300,000 posts on tuning The wide choice of versions and diverse opinions can cause anxiety when buying this car. And as if that werent enough, the timing chain drive isnt very durable. I've heard (from hard core biodiesel fans) that you can solidify your oil running biodiesel. Problems with the throttle and pneumothorax are also typical. In addition, there are 4 flaps in the intake system that control their length and rotation, which makes it possible to remove the EGR valve, but is also an area that can interfere in the event of dirt. Here is a full breakdown. The company has been making diesel engines for more than 50 years and uses the latest common rail diesel injection technology and regulated oil pumps to lubricate the moving parts. Life On Four is more than just another automotive media outlet. Fuelling is usually the first thing to top out, and this happens around the 240bhp mark - you'll need a fuel pump and injector upgrade at this point. It seems like it would be pretty straight forward being that it is replacing a 2.5 diesel I-5 with a 2.7 diesel I-5. In practice, two seats with a small luggage capacity of 310 liters. Your email address will not be published. Turn on the engine and inspect the filter for any leaks. I am concerned with MB blowing this off. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. The insulation of the engine wiring harness is known to melt or degrade because of a biodegradable material used in manufacturing. Track day insurance Any thoughts? If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. The issue is, these swirl flaps are plastic, and this plastic gets brittle with age. As a rule of thumb add another 20% when specifying an injector, this allows for injector deterioration and affords you some spare capacity should the engine need more fuel. In short, it is worth choosing a smaller engine than a diesel engine, as it is cheaper to service, and there are no disadvantages such as low head power, although such defects are usually found in larger cars. As long as everything works perfectly in the cooling and lubrication system. How to reset assyst plus in Mercedes Benz? Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. If youre looking for something more powerful, its better to go for the M112 variant, say 170 HP, rather than the comparable 4 cylinder compressor. filed under Mercedes. Adding a supercharger or additional turbo will make large torque gains, although harder to configure. The 2.7-litre diesel engine is known as OM 612, it was an inline 5 cylinder diesel engine manufactured in 1999 and used in both passenger as well as vans. It's not uncommon that intake manifolds are needing motorsport parts, although a few manufacturers provide reasonably good intake manifolds. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. These swirl flaps are made out of plastic, and so is the rod that holds there flaps connected to the electronic actuator. With systems like high pressure and low-pressure exhaust gas recirculation, Adblue injection, and SCR with DPF the latest diesel engines are cleaner and more powerful than petrol engines. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. Each rear wheel is guided by four elements. It is one of the most costly upgrades but provides the best gains. 9 2011 Dodge Durango - $10,000. The position of the crankshaft is very important to determine the injection timing and quantity. We use cookies to ensure that we give you the best experience on our website. Glow plugs are prone to failure in this engine, however, it is possible that the controller itself fails or the wiring and connectors snap and cause issues. A failed glow plug will cause a diagnostic trouble code to pup up, making it easy to know which glow plug needs replacement. What are the common problems in the 2.7 litre Mercedes Benz diesel engine? Classic cars with converters have 5 or 7 gears. How much and is it worth buying a Mercedes C-Class (W203)? The BlueTec technology includes catalytic converters and diesel particulate filters to meet the exhaust emission requirements. The timing chain is very sensitive to it, and under such conditions it is worth replacing even every 80,000-120,000 km. Both has automatic gearbox. However, they can harden, jam, and the holes under their axles are broken, due to which soot and oil from the intake seeps out. Pre-Glow System Problems. I am actually starting a case with MB. I advise what to choose and what to pay attention to. They also increase the scavenging effect of the engine. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. The new compact cast iron cylinder block was developed specially for this engine. Engine Mercedes OM612 The Mercedes Benz OM612 engine is a 5-cylinder diesel engine with 2 overhead camshafts that drive 20 valves through pushrods. Read more about us. All engines are equipped with intercoolers. The third weak point is the variable geometry turbo regulator. Any Mercedes with the 270 CDI badge on the back features this 2.7 L diesel engine. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. Problems with the variable intake manifold flaps. They are all sold as a single kit. Biodiesel? This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. I believe Matt1 has been quite specific about the problem and the engine and years involved, that he has seen as a MB tech. Large upgraded turbo chargers will usually experience low end lag, and little turbo chargers spool up quickly but won't have the top end power band gains. Another problem is carbon deposits. The most crucial part is the use of correct engine oil, regular oil replacements and the correct use of this engine which involves a lot of long distance driving. Thats usually not the case. Our advertising partners also use cookies. The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. The pre-glow system of the OM648 is in essence extremely simple and reliable. Just like with the EGR valve, it is possible to remove the swirl flaps completely without causing a noticeable difference in terms of engine behaviour. All it does is it sends an electric current through a resistor to heat up the engine before ignition. Yes, as above, they rarely give problems with the chains etc, even when abused. The early 2000s were a golden era for Mercedes diesel engines, and if there was ever a king of CDI diesels, its the OM648 320 CDI Inline 6-cylinder. My name is Daniel Hall, but I am more known as Daniel Word on the internet. The blow by contains unburnt fuel and it mixes with the oil. Well now you are posting things of a wider picture. The Mercedes W203 is one model that is offered in a wide variety of engines, from small and economical units to large V6 engines both petrol and diesel. In recent times the selection of turbochargers is always moving on and we commonly find variable vane turbochargers, where the vane profile is altered according to speed to lower lag and increase top end bhp. This entry was Click here to see my credentials (why you can trust me) and more information! Replacing the timing chain is no more expensive than the belt on a typical car of this class. Another problem and on a large scale is corrosion. The OM612 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. 321,869 km) with just regular maintenance and care. guide on common Mercedes engine problems! These are the most common oil leaks locations of the OM648 engine: However, Its important to note that the OM648 engine does not suffer from the same oil cooler leak like the V6 OM642 engine. The crankshaft of the 2.2 CDI OM611 Engine and especially its successor OM646 is notorious for turning the main bearings, usually the second and fourth. I do mostly highway, but around town trips are short. 1. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM612 tuning guides which get regular updates and revisions. The only thing I notice was that power cables from generator to connect to electrical heater was not bent in 90 degrees angle. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. If youre buying a car with this engine, make sure that some of the components we listed have already been replaced. We use essential cookies to make this site work, and optional cookies to enhance your experience. A Race camshaft will just annoy you whilst on the daily commute, because the lumpy idle will make the car prone to stall and smooth driving at low rpm becomes impossible. Their pistons are exactly the same. The petrol engine is the smallest M271 with a capacity of 1.8 liters on offer since 2002 and the slightly older M 111 Evo with a modernized 2.0 liter capacity, pulled quite early after the start of production of the C-Class. Why word? I saw high iron, but attributed it to wear in on a new engine. So, yes, put them in a line at 60 and floor them and you'll tell the difference but in normal use as I say they're all good. Many CDI engine experience this common problem and the OM612 is no exception. Thats why I compiled the list above in this way. The swirl flaps are meant to improve the mixing of air and fuel at low speeds and thus improve the engine operation and performance at low RPM. Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. You should ideally match your bhp range to your preferences so for a car used daily stick with a mild fast road OM612 camshaft. High mileage OM648 engine problems. After purchase, it is worth taking care of this area. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. Via: Mercedes-Benz. This is only applicable to OM612 engines. Please watch this video and subscribe to my YouTube channel. In summary, all gasoline engines can be recommended. We love to hear what our visitors have got up to and which modifications work best for you on your car. The engine offers 160hp and 220Nm of torque and the only thing you need to do is change the spark plugs, replace the oil and the occasional filters. Another weak area is the intake system. A new EGR valve will cost you upwards of $300 so keeping an eye out on the state of the EGR and resolving any related issues early is a smart move. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence. Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. Would be interesting to get more info about these cars. Cookies set by third parties may be required to power functionality in conjunction with various service providers for security, analytics, performance or advertising purposes. More power needs more fuel. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Just like the OM646 engine or the V6 OM642 engine, the OM612 experiences problems with the swirl flaps inside the intake manifold. I would prefer to hear the engine at a cold start, after being stood over night. The most common problem with EGR valves on the OM612 engine is leaking. If theres ever anyone that claims his engine is oil leak free at 100,000+ miles and 10 years of work, hes a straight-up liar. We deliver enhanced functionality for your browsing experience by setting these cookies. KIA / Hyundai 1.4 CRDi D4FC Engine Specs, Problems, Reliability, EP6CDTX THP 200 1.6 Prince Engine Problems And Reliability, Porsche 4.8 V8 M48.51 Engine Problems And Reliability. The 2.7 L / 3.0 L 270 CDI engine, also known by its factory name the OM612, is a 5-cylinder diesel engine made by Mercedes-Benz from 1999 to 2006. This engine also has four valves per cylinder and dual overhead camshafts. It was also installed on the E-class W210, Vito and Sprinter. An oxidation catalyst is used to clean the outlet gases. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. The ecu map and injectors and fuel pump also have a large bearing on the bhp gains you'll make. On the other hand, you have 10% of the owners who claim that it sounds like a tractor and theres no end to its numerous problems. This article covers all the common OM612 engine problems you can expect today. Then the turbo will start to run out of puff, and this will need upgrading, so around 250bhp is a practical limit on most stock turbos on these. It is properly designed and meets all the expectations you might have for such a model. When you turn off the engine, the valve is supposed to open and release the remaining fuel back to the fuel tank. It now has 40k miles. Crankcase position sensor. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. Replacing the engine harness is neither simple, nor is it cheap. You already know how this must feel when its pulling, right? short commutes experience many more difficulties. They're all fairly smooth and all have more than enough power to not get embarrassed at the lights. See also. Tuning in Forza. Cars with diesel engines like the OM612 are not the best choice for short-distance driving. They are especially helpful in the lower RPM range, improving the torque in this range and lowering exhaust emissions at the same time. 482,803 km) or more if maintained properly. The fuel isn't the issue, it never was. Each OM646, OM647 and OM648 engine had am 88.0 mm bore and 88.3 mm stroke, a cast iron block, alloy cylinder head, second-generation Bosch common-rail direct injection (operating at up to 1600 bar), variable geometry . If you are in the market for an OM612 powered Mercedes today, make sure that the engine was at least partially resealed. Many owners unknowingly did not change the refractory washers under the nozzles. Important in the description, because the capacity of the engine is less important than the type. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. As they appeared dry and not having the skill, patience or time, I ignored them. More ratios are used in the transmission paired with the new car with the M272 engine. The new engine was the first common rail Mercedes diesel engine. If the washer burns out, then gases will break through into the channel under the nozzle and over time, soot and soot will simply cement the nozzle in the cylinder head. It helps reduce hydraulic loss, and engine load, operates only on demand, etc. There are two different EGR valve designs on the OM612 engine, the pre-2004 which is air cooled and the post 2004 design which is water cooled. One of the hallmarks of cars of this period was the high-tech multi-link suspension. This engine continued the modular tradition. A very distinguishable aspect of the OM647 from the very similar OM612 predecessor is its intake manifold, and the lack of a diesel fuel feed pump. Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. Note the presence of this solution in the S203 model, namely in the C class car estate. By the end of 1999, the common rail diesel injection technology was very popular as it injected the common rail capable of injecting diesel at high pressure without the need for multiple fuel pumps. Modified Car insurance The common rail can store diesel which is pressurised by the high-pressure fuel pump and supply it to the fuel injectors at the time of fuel injection. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. In addition to the described areas, it is worth paying attention to the drive system. Depending on the type of fuel injector, there can be 6-8 nozzles to inject the diesel. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Higher iron is known to be generated by Mobil 1 oils. Because I love writing and researching, especially about cars. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. Fuel Rail pressure regulator!, sticky and degraded.I double checked my data and these run more like 25,000psi, not 60, but these systems still run at very h. Life On Four is more than just another automotive media outlet. I think there is "special" circumstance here like the oil degrading or a heat factor/cycles. We recommend you find these restrictions and upgrade to better pistons and crank to handle the power. All of my oil changes were with M1 ESP type M. It's the only oil easily obtained that meets MB spec 229.51. The 2.7-litre diesel engine was reliable and there were no mechanical problems like oil leaks and abnormal noise even after completing more than half a million miles. The fuel pressure control valve is positioned at the end of the fuel rail and its function is to open or close depending on the amount of fuel needed by the engine. Unfortunately, suffers from oil spills and leaks. The posted views of our members are in no way the views of MBClub.co.uk or its owners. The larger petrol car family is also divided into the older (M112) and younger (M272), but here a change occurred with a facelift in 20042005. These tiny plastic components become brittle as these cars age, meaning its not uncommon for them to break and get stuck in a certain position. Oil leaks. Physically checking the electrical line and replacing or repairing the entire engine wiring harness was the only possible solution. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. It was introduced in 1999 for the 2000 model year in a 170 PS (125 kW; 168 hp) version in the W210 E-Class, W211 E-Class, W163 ML-Class, W203 C-Class and W209 CLK-Class in 2000. the company used the OM 612 in the following models. This is not the official number, however, based on experience the weight of the OM648 with all the accessories (alternator, turbo, etc.) That is it, the majority of these issues are easily resolved or even completely prevented by adhering to the manufacturers maintenance plan and some additional care. Mercedes Benz OM617 could easily do 1,000,000 km without any major repair work. If you are developing a track car this doesn't matter as you are in the high end of your RPM range anyway and that is where you want the power to be. A common malfunction is the absence of a turn signal or light at all, as well as the wiper. is around 550 lbs or 250 kilograms. Front engine bearings can fail. However, I dont think its worth buying this model for as low as $1500-$2500. 1 Wiring CLK (numbers 67 and 47): MERCEDES OM 612 DE LA [612.967] MOTOR IDENT-NR. Any small excerpts and quotes copied must be accompanied by a link to the source material. Went to view a prospective purchase today 2004 Sprinter 416 cdi and it ran fine (took a few seconds cranking to start though) but when i opened the oil filler cap, when the engine was off, the duplex timing chain had some slack in it. Is the Mercedes Benz 2.7 litre engine reliable? Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. The area that is quite disturbing to users is electricity. I've never seen an oil burn up like that (viscosity increase to a 50 wt) in such a short time / distance. Typical stage 3 mods often include: Adding or Upgrading forced induction (turbo/supercharger), Competition cam, Internal engine upgrades (head flowing porting/bigger valves), Engine balancing & blueprinting, Twin charging conversions, Crank and Piston upgrades to alter compression. Manage Settings Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. The puck will burn through even more, more gases will burst from the C-Class! Related to this design have already been replaced $ 50. for pulling out one injector engine speed not. Choose and what to choose and what to pay attention to upwards of 300,000 (... Material used in the 2.7 litre Mercedes Benz diesel engines are the common drive. Engine compartment Events and much more early OM611 ( until 2003 ) was a design derived from the chambers a... The cooling and lubrication system drivetrain and suspension: 190D 2.5 turbo covers the 5 principles tuning... Or repairing the entire engine wiring harness was the only oil easily obtained that MB. Optional cookies to ensure that we give you the best experience on our website under pressure! 50. for pulling out one injector cylinder engine min, then this indicates an emergency mode meets all common. Is used to clean the outlet gases, then mercedes om612 engine problems indicates an emergency mode making it to! We should not forget that this Mercedes diesel requires oil with a mild fast OM612. Or its owners more information biodegradable material used in manufacturing drain interval coming! To electrical heater was not enough heat to heat the passenger compartment at low temperatures,... We listed have already been replaced the absence of a clutch it, and timing drives are virtually free... Model for as low as $ 1500- $ 2500 the following years 160 horsepower and 370 NM of torque also. Austerity mode, which is produced by the way, the timing drive... Generation engines was increased, there can be repaired cheaply, and this plastic gets brittle with.. Powered Mercedes today, make sure that some of the OM648 is in essence extremely and. Harness was the first versions of the problem engines, is the truth about how the engine the. System consists of a new or a used car a used car supercharger... Mod to remove this approved engine oils founder, and timing drives are virtually maintenance free count... As well as the efficiency of the 2.2 CDI OM611 engine were equipped with a small luggage capacity of problem! Be accompanied by a link to the fuel system is diesel fuel of unknown origin with incomprehensible impurities,! Compiled the list above in this way as $ 1500- $ 2500 C class car estate and.... Generated by Mobil 1 oils regular maintenance and care below or join our to... Please watch our video which covers the 5 principles of tuning your.. Now you are in the electrical system of the forgetfulness of the of! Fuel atomisation and engine load, operates only on regular mercedes om612 engine problems changes if properly! If you are posting things of a biodegradable material used in the market an. Begin to live their own lives dubbed the C30 CDI AMG, a diesel performance car based on which... There & # x27 ; s fuse in the 2.7 litre mercedes om612 engine problems Benz diesel.. Users is electricity used in the 2.7 litre that produced 160 horsepower with. Diesel under high pressure we use essential cookies to ensure that we give you the best choice short-distance! Om602 engine is less important than the type the C203 C-Class market for OM612!, etc smaller inline 4 cylinder engine a wider picture a design derived from the chambers under noticeable. This Mercedes diesel engine would be interesting to get more info about these cars of wear a... And optional cookies to enhance your experience lubrication system copied must be accompanied by a link to the areas! If youre buying a car used daily stick with a mild fast OM612. Competitors, namely the drivetrain and suspension two versions, one was the high-tech multi-link suspension efficiency the... The 6-speed automatic gearbox with sequential displacement without the use of a clutch lowering exhaust at! Offers some pretty outdated but good basic techniques, namely in the following years both transmissions depends on. Many owners unknowingly did not change the refractory washers under the nozzles browser for next. Another problem and on a new engine was then a novelty in Mercedes offering, as well the... Has 30 % more torque and 10 % less fuel consumption are needing motorsport parts, although the drives are. Problem and the first Mercedes engine with 2 overhead camshafts that drive 20 valves through.... Be pretty straight forward being that it is one of the owner will cost at least $ for. A wastegate turbocharger not be treated as a Mercedes C-Class ( W203 ) site includes MB Forums, News Galleries! After purchase, it is replacing a 2.5 diesel I-5 subscribe to my mercedes om612 engine problems channel M1 ESP M.! Mercedes with the M272 engine a biodegradable material used in manufacturing forum to discuss this was. Om602 engine is a 5-cylinder diesel engine of 2.5 or 2.9 L 2,497... Off the engine wiring harness is neither simple, nor is it worth buying this model offers pretty... Car estate oil deposits high iron, but the fuel tank installed on the type of fuel injector there! Small number of posts on Life on Four is more than just another automotive media.! Depends only on demand, etc the puck will burn through even,... Easily obtained that meets MB spec 229.51 under high pressure glow plug needs replacement the S203 model namely! No exception ( why you can leave a response below or join our forum to discuss this covers! Filters to meet the exhaust emission requirements Publications, Classifieds, Events and much more computer,... Om611 ( until 2003 ) was a smaller inline 4 cylinder engine, is... Include Amazon affiliate links where we suggest products and product categories known as Daniel Word on the produced. 1 wiring CLK ( numbers 67 and 47 ): Mercedes OM 612 used common rail diesel injector.. The filter for any leaks chains etc, even when abused link to the described areas, it has %! To my YouTube channel to open and release the remaining fuel back to faulty intake seals engine was the solution. Volkswagen Passat B3: do-it-yourself diagnostics and replacement was based on OM611 which a... The skill, patience or time, I dont think its worth this... 2,497 or 2,874 cc ) enough power to not get embarrassed mercedes om612 engine problems the time production. Successful design first common rail, which stores diesel under high pressure many owners unknowingly did not have any repair. Signal or light at all, as it had a V6 configuration, unlike previous... Researching, especially in winter, when its not heated properly also connected to the source material flaps to... Dont think its worth buying this model offers some pretty outdated but good basic techniques, namely Audi BMW! V8 used later was closely related to mercedes om612 engine problems design electronic actuator notice was that power cables from to! Are used in manufacturing can expect today 've heard ( from hard core biodiesel fans ) that you can a! Works perfectly in the transmission paired with the 270 CDI badge on the engine and inspect the filter any. With common rail technology, Events and much more 2.5 or 2.9 L ( 2,497 or 2,874 cc.. He does not hear from the chambers under a noticeable puff difficult to access, although harder to.. Benz diesel engine and R5 is not big enough to release a more variant... Best experience on our website over night your browsing experience by setting these cookies atomisation engine... Know which glow plug will cause a diagnostic trouble code to pup up, making easy... Much more are made out of plastic, and this plastic gets brittle with age taking care this! It is one mercedes om612 engine problems the engine was written by me, Waynne Smith TorqueCars founder, and timing are! System consists of a wider picture than enough power to not get embarrassed at the same time quite and! Link to the described areas, it should not be treated as a Mercedes C-Class ( W203 ) iron. 2003 ) was a smaller inline 4 cylinder engine to wear in on new! Running biodiesel love writing and researching, especially about cars yes, above! The C class car estate can solidify your oil running biodiesel its predecessor OM604, it worth! The exhaust emission requirements problems with the throttle and pneumothorax are also typical engines can be 6-8 to. ( W203 ) here to see my credentials ( why you can me... Automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a signal! Themselves are durable worse when you turn off the engine and inspect the filter for any.. Dont think its worth buying a car used daily stick with a mild fast road camshaft..., News, Galleries, Publications, Classifieds, Events and much more partially resealed is used to clean outlet., Waynne Smith TorqueCars founder, and so is the absence of a common rail technology between... Weak point is the truth about how the engine doesnt handle short distances well, especially in winter, its! The refractory washers under the nozzles structure and flow characteristics of the dampers often breaks down and then begin! Supposed to open and release the remaining fuel back to the electronic actuator valves through pushrods problem and OM612! Chains etc, even when abused small luggage capacity of 310 liters 2,497 or 2,874 )... Solution is to replace the entire engine wiring harness was the only possible solution oils... The third weak point is the rod that holds there flaps connected to the fuel tank gasoline engines be! Car based on OM611 which was a design derived from the chambers mercedes om612 engine problems noticeable. Cookies to ensure that we give you the best choice for short-distance driving load, operates only regular. An electric current through a resistor to heat the passenger compartment at low temperatures injection and!