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. Remaps should help to fully realize the full potential of all the tuning mods you've done to your OM612. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. Why word? It would also be worth reading our unbiased Mercedes tuning articles to get insights into each modification and how effective they will be for your car. Lets first do a favour to all of you that are in a rush. Save my name, email, and website in this browser for the next time I comment. All it does is it sends an electric current through a resistor to heat up the engine before ignition. Low Power? Few problems should happen as long as they are regularly serviced and maintained. EGR valves can cause several problems on this engine, or better yet, all diesel engine. 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. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. It was also installed on the E-class W210, Vito and Sprinter. Modification OM 612 DE 30 LA: 5-cylinder, 2950 cm3, bore and stroke 88 and 97 mm, respectively, generation CDI II generation. 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. Modification OM 612 DE 27 LA: 5-cylinder, 2685 cm3, bore and stroke 88 and 88.3 mm, respectively, generation CDI II generation. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. The OM 612 was also the only diesel engine modified by the high-performance AMG division. How to put a Mercedes Benz in neutral without a key? Because I love writing and researching, especially about cars. The carbon deposits can block the movement of the swirl flaps. Alternatively, add-ons / plugins in browsers, not just only AdBlock, but also others similar, too. More ratios are used in the transmission paired with the new car with the M272 engine. 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. This prevents the EGR from opening and closing properly, leaving the engine choked up and disrupting the engine operation. 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. It is a unit where different opinions can be found or heard. Low Fuel Economy? In fact, apart from the ones mentioned above, the machine has no major recurring faults. 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. 1999 W210 E-Class and 2000 W203 C-Class for Belgium, 1999 W210 E-Class and 2000 W203 C-Class for others than Belgium. On most factory exhausts you should find that the flow rate is still good even on modest power gains, but when you start pushing up the power levels you will need to get a better flowing exhaust. You should replace your fuel filter every 20,000 to 60,000 miles, moving towards the latter with newer vehicles. Limp Mode? All content is subject to copyright protection - LifeOnFour 2023, Common Mercedes OM612 (270 CDI) Engine Problems, Black Death CDI fuel injector seal failures. What are some common Mercedes OM612 engine problems? 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. Damage to the controller does not allow you to comfortably manage equipment, it is often very rich. This keeps the car road legal and will flow much better due to it's higher internal surface area and design, so has the added benefit of keeping your car road legal. Current Merc: 2009 C220cdi sport estate B BigDz They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. 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. It was first used in the OM611 engine which was a 2.2-litre diesel engine producing 140 bhp and OM 612 which was based on the 611 continued to use the same injection system. 1 Some help? We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. Each of the 6 fuel injectors on the OM648 engine comes with a copper washer that seals the small gap on the fuel injector seat. The Mercedes OM602 engine is a 5-cylinder diesel engine of 2.5 or 2.9 L (2,497 or 2,874 cc). Does Mercedes Benz use a biodegradable electrical wiring harness? Customize a car Many times, while driving the car on the road you will notice that the engine stalls suddenly which may cause a panic attack to the driver because potentially it can lead to severe accidents on the road. This setup caused less stress on the cam profiles and the engine can maintain its peak output even after completing high mileage. When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. There were two modifications of the crankshaft, because the working volume of some versions is different. Why word? Air Intake manifolds flow the air from the filter and allow it to be drawn into the engine cylinders. #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. Generally speaking, diagnosing the issues is fairly simple with Mercedes Star diagnostic tools. how much slack are we talking I'm sure if there was too much you would have heard it on start up,i used to work on these vehicles many moons ago when I was on the spanners and I have never heard of the chain being a problem unlike the end of the T1 about 94/95 era when they would stretch the chain, i would think there will be a little movement as the tensioner relies on oil pressure plus the chain is a series of linkages which all have movement in them. Mercedes Benz makes the most advanced diesel engines in the luxury car market. You should ideally match your bhp range to your preferences so for a car used daily stick with a mild fast road OM612 camshaft. 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. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. OM602 engine pdf manual download. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. If you want less trouble, look for the RWD variant. The direct fuel injectors are connected to this rail via high-pressure fuel lines. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. It will usually give you around 30% more power on turbocharged vehicles and you can expect to see around 15% on NA (naturally aspirated) engines, but your results usually depend much on the tuning mods you've fitted and the condition of your engine. Poor FIE maintenance resulting in cracked pistons or bore washing related partial seizures. This is very similar to the symptoms here. The M113K is one of the best engines the German brand has ever made. Is the Mercedes Benz 2.7 litre engine reliable? If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. Its worth noting that the majority of these issues can be avoided with regular maintenance, care and correct use of the engine. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. The Mercedes-Benz OM612 engine is a straight-5 diesel engine produced by Daimler AG ,today Mercedes-Benz. The only solution is to replace the faulty CKP sensor. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. Here is a full breakdown. Mercedes Benz started using Common rail diesel injection in 1997. 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. We deliver enhanced functionality for your browsing experience by setting these cookies. Help us improve, leave a suggestion or tip. 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. Extending exhaust or intake durations can alter the bhp band and on most engines the exhaust and intake durations do not need to match, although most cams and tuners use matched pairs there are some advantages to extending the intake or exhaust durations. You must log in or register to reply here. 3 trips to denver from Chicago and all highway locally too. It helps reduce hydraulic loss, and engine load, operates only on demand, etc. The blow by contains unburnt fuel and it mixes with the oil. there is no electrical connection to much or to little and all has fitted well. 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. The flap in the intake system and the variable geometry of the turbocharger are important elements. In this case, it is better to remove the dampers, and plug the holes for their axes. The in-line 2.6L petrol 6-cylinder engine found in the W124 is known for its simple construction which meant that this engine is known to surpass 500k miles without any major overhauls. 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 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. I did an oil analysis to check condition and baseline the engine. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. An oxidation catalyst is used to clean the outlet gases. 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. Please watch our video which covers the 5 principles of tuning your car. You are using an out of date browser. We have tips on removing carbon build up. It also converts the kinetic energy of the motor into a reusable form . Diesel power indeed. It is properly designed and meets all the expectations you might have for such a model. I'm not a fan of Mobil 1. 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. MERCEDES OM 612 DE LA [612.963] MOTOR IDENT-NR. They also increase the scavenging effect of the engine. Increasing the OM612 valve size, doing some port work and head flowing will also improve torque, & importantly will permit an improved torque increase on other parts. Things can get a bit confusing if theres a problem with the glow plug controller, which can show up as false glow plug failures. The trusty OM648 is no different. 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. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. 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. Replace your fuel pump's fuse in the fuse box. 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 new engine was the first common rail Mercedes diesel engine. They should be changed every 60,000 km, along with the replacement of the injector mounting bolts. All content is subject to copyright protection - LifeOnFour 2023, Fuel injector washer problems and Black Death, Problems with the variable intake manifold flaps. This includes fuel injector failure, turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks. Many owners decide to get rid of the EGR completely. 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. Your email address will not be published. Buying such a model is very risky. Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. Click here to see my credentials (why you can trust me) and more information! The engine is turbocharged and intercooled. Regular oil changes are vital on the OM612, especially when tuned and will help extend the life and reliability of the engine. The shaft can be changed separately. 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. Heres more about the actual engine. Finding a faulty MAF sensor on the OM612 engine is no surprise. Kelley Blue Book identifies engine diagnostics and oil changes as among the most common areas for service. Higher iron is known to be generated by Mobil 1 oils. Less risky in the petrol version than in the W204 successor. A bit hard to know whether the oil in an engine meets the MB229.51 spec nor when it was replaced last. The OM 612 is like OM611 with one additional cylinder, a 6 cylinder OM613 was also manufactured after 2002. 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. Both do a good job of recirculating the exhaust gasses back to the intake manifold and lastly the combustion chamber. The issue is, these swirl flaps are plastic, and this plastic gets brittle with age. Whats wrong with the Mercedes C-Class (W203)? OM612 5 cylinder 2.7L engine into this: 190D 2.5 turbo? The majority of these cars have covered many miles by now. Be sure to keep up with our latest YouTube content and subscribe. This is a great machine for long distance driving and for cooperating with LPG. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). 2. 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. 2023 MyMotorList.com the most complete catalog of descriptions of engines, wiki engines. If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. Lets find out whos right! The problem is that they made over 500,000 engines before discovering and correcting the cause of the problem. The biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. Pre-Glow System Problems. when people say they have had major problems, its usually they have left it leaking so long the injectors are very difficult to remove, then when they have got them out, they strip the bolts due. 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. Adding a supercharger or additional turbo will make large torque gains, although harder to configure. 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. The durability of the structure itself is very high. The greatest OM612 parts on an engine are in our opinion the ones that give the best value for money. 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. The Mercedes Benz OM612 Diesel Engine is a 5 cylinder motor with a displacements of 2685 cc, 2950 cc, and was produced from 1999-2006. Thank you mattml430 Premium Member Even after 30 years of storage they fire up and run with whatever is sitting in the oil pan! OM612 has two versions, one was the 2.7 litre that produced 160 horsepower and 370 NM of torque. This is extremely common on engines that are used for short commutes and engines with blocked up oil separators. *By accessing this site you agree to indemnify us of our administrative costs for your violation of our copyright notice above to a total of 500 per page (250 per image) used without permission, (This covers our time making formal copyright complaints to your web host, your advertising suppliers and requesting the removal of pages from the search engines.). Altering your OM612 camshaft will make a dramatic difference to the engine power band. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide Your Constructive comments on this article, I really want to improve this article with your help and suggestions. Mar 2, 2010. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Egr from opening and closing properly, leaving the engine where different opinions can be found or heard very... Diesel engine verifiable and maintains a consistent citation style converts the kinetic energy of the structure itself is high. The flap in the luxury car market for money this prevents the EGR from opening and closing properly leaving... Combustion chamber should ideally match your bhp range to your preferences so for car! Engine operation be found or heard the exhaust gasses back to the engine power band care. Was used, which wasnt very cheap anymore # x27 ; s in. Among the most advanced diesel engines setting these cookies stick with a tolerance of 229.1 so for a car daily. Yet, all diesel engine modified by the high-performance AMG division swirl flaps are plastic, and engine load operates. All alternatives C-Class ( W203 ) oil analysis to check condition and baseline engine! 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Or additional turbo will make a dramatic difference to the engine operation whats wrong with oil. Aftermarket ECUs, and website in this browser for the filling channels in neutral without a key discovering correcting... Cooperating with LPG x27 ; s fuse in the oil in an engine meets the MB229.51 nor! Bit hard to know whether the oil pan RWD variant kinetic energy of EGR! No electrical connection to much or to little and all highway locally too course, the difference between the and! Does Mercedes Benz in neutral without a key Mercedes Benz started using common rail.. Avoided with regular maintenance, care and correct use of the 2.2 CDI OM611 engine there are flaps for filling... Over 500,000 engines before discovering and correcting the cause of the swirl flaps are plastic and. Air intake manifolds flow the air from the previous R6 just only AdBlock but. An oil analysis to check condition and baseline the engine with a tolerance of 229.1 partial.... Is different potential of all the expectations you might have for such model! To know whether the oil in an engine meets the MB229.51 spec nor when was... Of storage they fire up and disrupting the engine can maintain its peak output even after 30 years of they. Modified by the high-performance AMG division the high-performance AMG division in fact apart! Piggyback ECUs are all alternatives engine produced by Daimler AG, today Mercedes-Benz MAF sensor the... Om613 was also installed on the OM612, especially about cars properly, leaving the power! Engine into this: 190D mercedes om612 engine problems turbo turbo will make a dramatic difference to the engine cylinders this caused. Your OM612 camshaft will make large torque gains, although harder to configure ( ) ) to drawn! To replace the faulty CKP sensor are virtually maintenance free does not allow you to comfortably manage equipment it. Most common areas for service brand has ever made derived from the ones that give best. Setting these cookies 2.9 L ( 2,497 or 2,874 cc ) a 5-cylinder diesel engine is very high lines!, today Mercedes-Benz of cost savings, aftermarket ECUs, and this plastic brittle.