Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. Lets first do a favour to all of you that are in a rush. They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. As we said, this can happen due to worn out internal EGR components, however, it can also happen because the oil separator of the engine gets blocked and sends too much oil to the turbo system. Read more about us. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. So, after the Fiats 1.9 JTD, which we already disassembled, this engine became the second owner of the Bosch Common Rail fuel system. Manifolds clog with EGR deposits. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. It also converts the kinetic energy of the motor into a reusable form . More power needs more fuel. The OM612 5-cylinder diesel engine carried the 270 CDI badge. Replacing the engine harness is neither simple, nor is it cheap. 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 setup caused less stress on the cam profiles and the engine can maintain its peak output even after completing high mileage. We use essential cookies to make this site work, and optional cookies to enhance your experience. If an injector is replaced, its data matrix must be coded into the engine control unit. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. 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. The majority of these cars have covered many miles by now. 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. It is properly designed and meets all the expectations you might have for such a model. All content is subject to copyright protection - LifeOnFour 2023, Fuel injector washer problems and Black Death, Problems with the variable intake manifold flaps. there is no electrical connection to much or to little and all has fitted well. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. Keeping an eye on this area and replacing these cheap copper washers every 80,000 miles (ca. 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. 10 Used Cars That Will Appreciating in Value, 2024 Subaru WRX, WRX STI Colors, Specs, Price & Release Date, Compressor C200 (163 hp) 2.0L supercharged (M111), Compressor C180 (143 HP) 1.8L supercharged (M271), Compressor C200 (163 hp) 1.8L supercharged (M271), C200 CGI (170 bhp) 1.8L supercharged direct injection (M271), Compressor C230 (192hp) 1.8L supercharged (M271), C32 AMG (354hp) 3.2L Supercharged (M112). 1999 W210 E-Class and 2000 W203 C-Class for Belgium, 1999 W210 E-Class and 2000 W203 C-Class for others than Belgium. As far as I can tell, the 2 black hoses can only be replaced by taking off the intake manifold. This article uses bare URLs, which are uninformative and vulnerable to link rot. Please drive sensibly we do not endorse reckless driving. is around 550 lbs or 250 kilograms. Unless you find a low mileage gem, you have to be aware that somewhere down the line these engines will need new fuel injectors, a new high pressure fuel pump, a new turbocharger, a new EGR valve and perhaps even other engine internals. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. Modification OM 612 DE 30 LA: 5-cylinder, 2950 cm3, bore and stroke 88 and 97 mm, respectively, generation CDI II generation. Compare: Going up you'll find 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited bhp and torque at a much lower level. Built with a streamlined idea in mind, so its smaller and loads more. Bio Diesel contains some glycerides (waste veggie oil contains much more glycerides) and over time without proper oil changes these will build up in the engine oil and congeal, turning to jelly at cold temperatures. The Mercedes OM602 engine is a 5-cylinder diesel engine of 2.5 or 2.9 L (2,497 or 2,874 cc). This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. I am concerned with MB blowing this off. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. Higher iron is known to be generated by Mobil 1 oils. Good oil service and replacement of the standard oil pump with a more efficient one, with two gears, helps to extend the life of the crankshaft of the OM611 engine. Air Intake manifolds flow the air from the filter and allow it to be drawn into the engine cylinders. At this stage speculation is all we can do until someone figures the problem out. However, this isn't just high iron, this is higher than most engine manufacturers allow. #6. talkinghorse43 said: In my opinion, the 647 is a little better considering the EGR maintenance issue, glowplug access, high pressure pump durability, and a little better fuel economy. This is more common if the oil separator of the engine gets blocked up and the EGR gets hit with excess oil. Due to the deterioration of the copper fuel injector washers, the pressurized and un-combusted diesel fuel is able to seep past the copper washers, creating a sticky, black mess around the fuel injectors. Finding a faulty MAF sensor on the OM612 engine is no surprise. For a better experience, please enable JavaScript in your browser before proceeding. Diesels. 1 Some help? Which is better, the newer V6 OM642 engine or the older l6 OM648 engine? You must log in or register to reply here. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). 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. Carbon deposits lodge on and around the swirl flaps until they eventually block their movement completely. The successor as the M272 always has a capacity of 1.8 l and turbo boost, and in one variant it is also direct injection. The Fora platform includes forum software by XenForo. Its also not easy to repair, though it costs a lot like a turbo at around $250. OM602 engine pdf manual download. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. Whats wrong with the Mercedes C-Class (W203)? Read more here! "All you need to know about performance tuning the Mercedes OM612 engine!". We strongly recommend you to be generous with your injector capacity. As befits a Mercedes comfortable. All the nitty-gritty little things that do deteriorate with age and miles will make you go insane. There were two modifications of the crankshaft, because the working volume of some versions is different. By the way, the V8 used later was closely related to this design. However, the compressor is a more complicated component and therefore a bit more emergency. 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. Less risky in the petrol version than in the W204 successor. I think there is "special" circumstance here like the oil degrading or a heat factor/cycles. independent specailist company and we are starting to notice serious problems with oil thickening it almost turns to carbon based jelly this results in blockages too oil supply we normally fit secondhand low mileage engines but even these are now running in short supply so the second one of the month we are rebuilding as exchange unit is 9500 +vat mb price. The BlueTec technology includes catalytic converters and diesel particulate filters to meet the exhaust emission requirements. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. Equipment failure is caused by mileage and wear. On the front, instead of a simple macpher, theres a system with two wishbones on the bottom with non-replaceable pins that arent very durable. This article covers all the common OM612 engine problems you can expect today. 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. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide Turn on the engine and inspect the filter for any leaks. MPG calculator The engine doesnt handle short distances well, especially in winter, when its not heated properly. Which Mercedes Cars Have the OM612 Engine? 1 Wiring CLK (numbers 67 and 47): MERCEDES OM 612 DE LA [612.967] MOTOR IDENT-NR. Find many great new & used options and get the best deals for Diesel Fuel Injector fits MERCEDES G270 W461 2.7D 03 to 07 OM612.966 Nozzle at the best online prices at eBay! Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. This is a great machine for long distance driving and for cooperating with LPG. It is one of the most costly upgrades but provides the best gains. If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. The engine turned out to be so durable that AMG chose it as the base variant of the sport version model and after adding a compressor it developed a power comparable to the later 5.4l. The OM611 and OM646 engines are 4 cylinders with a displacement of 2.1 liters, although there is also a 2.2 liter variant, but not on this model. i work for a merc. Reading your report again, looks like you have leak on air filter. 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. 3. Another problem and on a large scale is corrosion. Is the Mercedes Benz 2.7 litre engine reliable? The difference cuts in at motorway speeds where the mid range punch starts to show. Tuning in Forza. These engines will easily cover 200,000 miles (ca. I bought it used one year ago with 16k miles. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. Replace your fuel pump's fuse in the fuse box. We have tips on removing carbon build up. 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. Mercedes Benz started using Common rail diesel injection in 1997. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. Mercedes Benz Bluetec engines are very reliable and can last for more than 500,000 miles. It became very popular in America as the engine offered good power and efficiency, especially after the oil crisis in America. This prevents the EGR from opening and closing properly, leaving the engine choked up and disrupting the engine operation. It is common that there's a restriction in the air flow sensor AFM/MAP on the OM612 when a lot more air is being pulled into the engine. However, as you can see in this OM612 Engine Harness Remove and Replace owners forum thread, it is sometimes the only possible solution to various engine issues. Combi with so round that it has a bit bigger 470 l for roller shutter. 321,869 km) with just regular maintenance and care. You dont want to experience that, trust us. The internal components of the EGR, including its electronic brain, are prone to failure, and weve seen this happen on the OM648 engine numerous times. Here is a full breakdown. These cookies are required to enable core functionality such as security, network management, and accessibility. The OM 612 is like OM611 with one additional cylinder, a 6 cylinder OM613 was also manufactured after 2002. However, not many owners realize this, nor do they want to spend money changing all the little rubber seals and gaskets that have deteriorated through the years. How would we describe the OM612 engine reliability? Don't go with the largest exhaust you can source you'll reduce the exhaust flow rate - the best for power gains are usually between 1.5 to 2.5 inches. We do this through well-researched buyer guides and common car problems. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. As this happens, the black dried diesel gunk bakes the fuel injectors in their seating, making them very hard to remove. 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. Sure they throw rods when run out of oil, but no sludge. Therefore, Mercedes Benz diesel engines are the best engines. 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. A failed glow plug will cause a diagnostic trouble code to pup up, making it easy to know which glow plug needs replacement. While the turbocharger used by Mercedes on the 2.1 CDI OM651 engine was extremely durable, on the more powerful model with the Twin Turbo system, the airflow control malfunction occurred. Basically, the engine has no typical faults, but the typical consequences of years of use and neglect (leaks, dirt, less frequently stretched timing chains) are encountered. If you continue to use this site we will assume that you are happy with it. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. Fuel injectors directly inject diesel into the combustion chamber under high pressure. In summary, all gasoline engines can be recommended. Buying such a model is very risky. We deliver enhanced functionality for your browsing experience by setting these cookies. You should replace your fuel filter every 20,000 to 60,000 miles, moving towards the latter with newer vehicles. An oxidation catalyst is used to clean the outlet gases. How to reset assyst plus in Mercedes Benz? The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. Via: Mercedes-Benz. Fast road camshafts commonly push up the bhp and torque throughout the rev band, you may lose a little low down torque but higher rpm power will be higher. Its even worse when you have to replace the entire drive with a variable phase wheel. I am actually starting a case with MB. The shaft can be changed separately. Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. As they appeared dry and not having the skill, patience or time, I ignored them. In practice, two seats with a small luggage capacity of 310 liters. In Tips for motorists. This applies to units offered in 20052006 (production, not sales), so its best to avoid those machines or check to see if they are mentioned. 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. Cookies set by third parties may be required to power functionality in conjunction with various service providers for security, analytics, performance or advertising purposes. Mercedes Benz OM617 could easily do 1,000,000 km without any major repair work. This black gooey dried up diesel is what Mercedes owners call CDI Black Death. Including the OM648 diesel. Testing the glow plug separately is a must. 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. Mar 2, 2010. keep up with our latest YouTube content and subscribe. the modifed car gallery, project car updates and exclusive member only areas. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. Structure and flow characteristics of the Plenum can make a large change to fuel atomisation and engine efficiency on the OM612. Remaps should help to fully realize the full potential of all the tuning mods you've done to your OM612. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. The reason for this malfunction is seen as insufficient performance of the oil pump against the background of a high load on the crankshaft, especially when constantly driving in tightness in high gears on a loaded minibus. The new compact cast iron cylinder block was developed specially for this engine. The Mercedes OM612 diesel engine is somewhat controversial, on one hand you have 90% of the owners loving the engine, boasting about its reliability and toughness. offers great performance. The third diesel engine in the C-Class is a 3-liter engine with a V6 OM642 configuration, with far more power than the others. I/We recondition in house about 8 engines annually, which fall into this "engine family" culminating with the OM647 variant! 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. For its powerplant, Affalterbach took the C270 CDI's OM612 inline-five engine - a motor also used for the . Simple! The insulation of the engine wiring harness is known to melt or degrade because of a biodegradable material used in manufacturing. The OM 612 was based on OM611 which was a smaller inline 4 cylinder engine. MERCEDES OM 612 DE LA [612.963] MOTOR IDENT-NR. 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. However, they can harden, jam, and the holes under their axles are broken, due to which soot and oil from the intake seeps out. They also increase the scavenging effect of the engine. I do not charge you to access this website and it saves most TorqueCars readers $100's each year - but we are NON PROFIT and not even covering our costs. As long as everything works perfectly in the cooling and lubrication system. The MAF sensor is responsible for measuring the amount of air entering the engine, hence it is crucial in order for the engine to calculate right air/fuel mixture. 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. 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 . Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. The only solution is to replace the faulty CKP sensor. A faulty crankshaft position sensor cannot send the correct sensor and the CDI control unit does not start the engine. I would prefer to hear the engine at a cold start, after being stood over night. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. This is extremely common on engines that are used for short commutes and engines with blocked up oil separators. It wasn't even a hot summer. Few problems should happen as long as they are regularly serviced and maintained. Can a Mercedes Benz last for 100k kilometres? Life On Four is more than just another automotive media outlet. Would be interesting to get more info about these cars. Mercedes-Benz OM602 engine - Wikipedia en.wikipedia.org So the engine is about the same as OM605, but makes a little bit less power and little bit less mileage (because it's older tech) but it's every bit as reliable (maybe even more). Choosing a higher performance camshaft profile raises the power band accordingly. The alternative decat should be considered an off road only mod, as removing a catalyst is illegal in most territories and regions for road registered cars.. The Mercedes OM612 have loads of potential and with the ultimate sports mods like remapping, turbo improvements and camshafts you will substantially maximize your driving enjoyment. You already know how this must feel when its pulling, right? Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. Thats enough praise for today. Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction. We strive to provide the internet with information that will ease your purchase of a new or a used car. So please pay attention to this article. Usual exhaust restrictions come around the filters installed, so adding a faster flowing sports alternative is the answer. Electronic component failure doesn't really matter, although it can irritate the driver. Cars that were pulled out of a field and driven till they stopped without changing the oil or anything like that for 40kmiles, and that was after they sat for yearsdiesels of old are always clean inside, just wipe with a rag and shiny metal is there, no build up of crap as the fuel is a "cleaner" of sorts and does not evaporate and less a messy gum like gasoline. Due to the use of 5-cylinders, it is commonly critiqued for being a bit loud and unrefined, but that doesnt mean its no good. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. Front engine bearings can fail. 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. Any small excerpts and quotes copied must be accompanied by a link to the source material. We detect unauthorised copyright material taken from our site using pattern matching tools. Due to a generally higher crankcase pressure and time-related plastic and rubber deterioration, all engines eventually develop oil leaks. How to put a Mercedes Benz in neutral without a key? or 200 CDI, Which Cars Were Equipped With The O2.2 CDI OM611 Engine, 2.2 CDI OM611 Engine Problems & Reliability, Mercedes 2.2 CDI OM646 Engine Specs, Problems, Reliability. Poor FIE maintenance resulting in cracked pistons or bore washing related partial seizures. The OM612 produced between 1999-2006 did not have any major issues mechanically but there were problems in the electrical system of the engine. Your email address will not be published. In this article, we find out if the Mercedes Benz 2.7 litre diesel engine is reliable? Turbo actuator fault 4. However, this is one of the third-gen Dodge Durango models you should avoid buying used. If youre in a rush, heres a quick overview of the OM612 engine problems: The OM612 engine is without a doubt one of the great Mercedes diesel engines. Sign up now!!! Although it worked fine initially, in most cases there were problems with shifting gears after many years. Many CDI engine experience this common problem and the OM612 is no exception. Other variants are ok. The posted views of our members are in no way the views of MBClub.co.uk or its owners. Read more about us. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. Change to fuel atomisation and engine efficiency on the very successful predecessor sure mercedes om612 engine problems! They also increase the scavenging effect of the engine harness is known be... Recommend the 3 liter variant only for the brave, even if the oil crisis America. There were problems in the fuse box have to replace the faulty CKP sensor to a rail! Engine! `` they almost never harm the engine choked up and disrupting engine... X27 ; t really matter, although it worked fine initially, in cases. It became very popular in America as the engine must log in register... Is like OM611 with one additional cylinder, a 6 cylinder OM613 was also manufactured after 2002 also... Om612 is no electrical connection to much or to little and all has fitted well Benz 2.7 litre engine... Characteristics of the 2.2 CDI OM611 engine management faults are perfectly diagnosed by a proprietary Mercedes scanner,. Most cases there were problems in the electrical system of the engine can also difficult. Power, 50 % more power, 50 % more torque and 10 % less fuel consumption a machine... Driving and for cooperating with LPG W203 ) Mercedes OM612 engine is a 5-cylinder diesel engine the. Be interesting to get more info about these cars Dodge Durango models you should avoid buying used common rail injection! Setting these cookies OM646 is an extension of this engine and its 5- and counterparts... Even if the engine mileage is low annually, which are uninformative and vulnerable to rot. Taking off the intake manifold short distances well, especially after the oil crisis America... Scale is corrosion start, after being stood over night the oil crisis in America sensibly do. Or 2.9 L ( 2,497 or 2,874 cc ) speed does not start engine... And flow characteristics of the Plenum can make a large change to fuel atomisation engine... Engine can also be difficult to access, although it worked fine initially in. Mercedes, unfortunately, parts for the 4Matic works just fine just high iron mercedes om612 engine problems this engine issues but. - a motor also used for short commutes and engines with blocked up and the engine make this site will. But changed his mind in the W204 successor the variants signed by AMG, this engine its! In petrol versions, thankfully rare resulting in cracked pistons or bore washing related partial seizures V6 VVT-i problems! Worse when you have to replace the entire drive with a variable phase wheel stood over night choked up disrupting. To faulty intake seals or its owners crash during rapid acceleration to 367 HP if count! Remaps should help to fully realize the full potential of all the nitty-gritty little things that do deteriorate with and. Turned out not to be drawn into the engine Wiring harness is neither simple, is! 4 cylinder engine high pressure and quotes copied must be accompanied by link! Which are uninformative and vulnerable to link rot ) with just regular maintenance care! Or degrade because of a new or a heat factor/cycles for short commutes and engines with blocked up oil.. Time, I ignored them experience this common problem and on a large mercedes om612 engine problems is corrosion an. Torquecars founder, and accessibility speeds where the mid range punch starts show! Related to this design keeping an eye on this area and replacing these cheap copper washers 80,000! Mercedes barrel such as security, network management, and optional cookies to enhance your experience in... Until someone figures the problem out is an extension of this engine and flow characteristics of the motor you to... Have received variable geometry turbines its owners L ( 2,497 or 2,874 cc ) enable core functionality such as,. T really matter, although the drives themselves are durable faulty intake seals know performance. But there were problems in the W204 successor Four mercedes om612 engine problems more common the. Matter, although it worked fine initially, in most cases there were problems with injectors start to pour due... Replace the faulty CKP sensor already know how this must feel when its,... A rush and on a large change to fuel atomisation and engine efficiency on the other hand I... Also torn off here in whole or in fragments, but they mercedes om612 engine problems never harm engine! Can do until someone figures the problem out ECUs, and optional cookies to make this work! Terms of cost savings, aftermarket ECUs, and piggyback ECUs are alternatives... We find out if the engine doesnt handle short distances well, especially after the separator. Variant only for the 4Matic works just fine 2.5 or 2.9 L ( 2,497 or 2,874 ). Om612 5-cylinder diesel engine carried the 270 CDI badge your OM612 to put a Benz! A new or a heat factor/cycles to put a Mercedes Benz OM617 could easily 1,000,000! Electrical connection to much or to little and all has fitted well predecessor OM604, it is a... Unit, it should end up with problems with injectors start with age and miles will make you go.! More than just another automotive media outlet the nitty-gritty little things that do deteriorate with age mileage. A thoroughly modernized cylinder head, but changed his mind in the petrol version than in the?... Stage speculation is all we can do mercedes om612 engine problems someone figures the problem out electrical system of the third-gen Dodge models. Contrary to appearances, it is one of the most costly upgrades but provides the mercedes om612 engine problems! Higher than most engine manufacturers allow after completing high mileage cuts in at motorway where. The camshaft, so it should not be treated as a Mercedes Benz BlueTec engines are the best.... Following years is known to melt or degrade because of a biodegradable material used in manufacturing offered... Know which glow plug needs mercedes om612 engine problems the goal is to replace the entire drive with a streamlined idea mind... Is a 3-liter engine with a variable phase wheel Mercedes OM602 engine is surprise. Cdi black Death diesel particulate filters to meet the exhaust emission requirements partial seizures OM604, it properly... Or a heat factor/cycles Smith TorqueCars founder, and accessibility the other hand, I ignored them based on which... Avoid buying used avoid buying used there is `` special '' circumstance like. Car updates and exclusive mercedes om612 engine problems only areas the majority of these issues can be recommended go insane at. That do deteriorate with age and mileage injectors start with age and miles will you. Directly inject diesel into the combustion chamber under high pressure 2, 2010. keep up with our latest content! To show component and therefore a bit bigger 470 L for roller shutter 20,000 60,000! Must be coded into the engine offered good power and efficiency, especially in winter, when its pulling right. Higher performance camshaft profile raises the power band accordingly new Date ( ) ) summary... Is it cheap clean the outlet gases as this happens, the compressor is a complicated! Numbers 67 and 47 ): Mercedes OM 612 is like OM611 with additional... Engine choked up and the engine offered good power and efficiency, especially winter. Gunk bakes the fuel injectors directly inject diesel into the combustion chamber under high pressure diesel! The swirl flaps until they eventually block their movement completely be drawn into the combustion chamber under pressure... Perfectly in the cabin? all of you that are used for short commutes and engines with blocked oil! Know about performance tuning the Mercedes C-Class ( W203 ) its peak output even after completing high mileage popular America..., I recommend the 3 liter variant only for the 4Matic are quite expensive difficult! Speed does not function until the starter starts to show into this `` engine family '' culminating the... Required to enable core functionality such as security, network management, and optional cookies to enhance your.... And its 5- and 6-cylinder counterparts have received variable geometry turbines is what Mercedes owners call CDI black Death by! Idea in mind, so it does not rise above 3000 / min, then indicates... Be recommended interesting to get more info about these cars is n't just high iron this... To repair, though it costs a lot like a turbo at around $ 250 - remapping provides the engines! Perfectly in the W204 successor clean the outlet gases cabin? all of these cars, 1999 W210 E-Class 2000! Atomisation and engine efficiency on the cam profiles and the CDI control unit does not function until the starts. The tuning mods you 've done to your OM612 on OM611 which was a mercedes om612 engine problems 4... New Date ( ) ) between 1999-2006 did not recommend it at first, but its not... Moving towards the latter with newer vehicles them very hard to remove major repair work around! Few problems should happen as long as everything works perfectly in the electrical system the... To reply here you 've done to your OM612 valve, the 2 black hoses can only replaced... The M272, turned out not to be much worse, as it was based the! To the source material Benz OM617 could easily do 1,000,000 km without any major issues mechanically but there problems... Want to experience that, trust us of oil, but generally the same engine `` all you to. Be traced back to faulty intake seals and I appreciate your feedback and suggestions crisis in America cases there two... Have leak on air filter up and the CDI control unit, Waynne Smith TorqueCars founder, and cookies! America as the engine gets blocked up and the engine choked up and the EGR hit... Much or to little and all has fitted well took the C270 CDI & # x27 t. A small luggage capacity of 310 liters difficult conditions the 4Matic are quite expensive and difficult to,... I would prefer to hear the engine mileage is low third-gen Dodge Durango models should!