However, this isn't just high iron, this is higher than most engine manufacturers allow. It wasn't even a hot summer. Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability, Specifications Of The Mercedes 2.2 CDI OM611 Engine, Modification: OM611 DE 22 LA red. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). Yes, as above, they rarely give problems with the chains etc, even when abused. Because I love writing and researching, especially about cars. If they get stuck in a closed position, they severely impact the operation of 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. Your email address will not be published. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Just two things will kill it! The main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. Please consider converting them to full citations to ensure the article remains verifiable and maintains a consistent citation style. Each rear wheel is guided by four elements. Common Mercedes OM648 Engine Problems. Mercedes Benz started using Common rail diesel injection in 1997. How to reset assyst plus in Mercedes Benz? Life On Four is more than just another automotive media outlet. Tuning the Mercedes OM612 and best OM612 performance parts. 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. By the way, the V8 used later was closely related to this design. The fuel line replacement kit from Europarts-SD comes with 5 lines - 3 clear and 2 black hoses. Is this normal? 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. Here, careful verification is important. 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. 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. This is not the official number, however, based on experience the weight of the OM648 with all the accessories (alternator, turbo, etc.) The position of the crankshaft is very important to determine the injection timing and quantity. 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. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. It is worth noting that such a nuisance occurs mainly on Sprinter engines, and many of the same engines from Mercedes cars did not encounter such a problem (in fairness, we note that OM611 passenger cars also experience sticking of the main liners and jamming). Induction Kits It depends on the approach to the car. In the most severe cases, the crankshaft cracks. Why word? You guys are drawing lot of conclusions from a post that says nothing about the kind of oil, nothing about what the engines are involved, nothing about temperatures and nothing about location. How would we describe the OM612 engine reliability? The OM612 engines are fantastic to work on and we're finding that there are increasing numbers of modifications and tuning parts around. If they do break off, there is a possibility they get sucked into the engine, causing havoc and major damage on their way. 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. ..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. There are common areas of failure for every engine, with some being very over engineered and some only able to handle stock power. Many owners unknowingly did not change the refractory washers under the nozzles. All content is subject to copyright protection - LifeOnFour 2023, Common Mercedes OM612 (270 CDI) Engine Problems, Black Death CDI fuel injector seal failures. They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. 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. Choosing a higher performance camshaft profile raises the power band accordingly. 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. Biodiesel? The issue is, these swirl flaps are plastic, and this plastic gets brittle with age. Manage Settings 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. These cookies are required to enable core functionality such as security, network management, and accessibility. We do this through well-researched buyer guides and common car problems. 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. While the normal M113 was designed by Mercedes-Benz, the M113K is a modified version tuned by AMG and was the last Mercedes engine AMG used before switching to their in-house powerplants. Equipment failure is caused by mileage and wear. You dont want to experience that, trust us. Please watch our video which covers the 5 principles of tuning your car. Or maybe the owners are subjecting them to severe service (always cold running engine at heavy load) and the oil is polluted too much with diesel and has a reaction. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. If you want less trouble, look for the RWD variant. The biggest advantage of the 2.1L engine is its popularity. This engine is an absolute diesel powerhouse that joined reliability and power, which remain a symbol of the Mercedes CDI legacy. I do mostly highway, but around town trips are short. The Birth of CDI BlueEFFICIENCY on models such as the Mercedes-Benz E 200 CGI, Mercedes-Benz C-Class C, 2007 Mercedes-Benz C-Class, 2010 Mercedes-Benz C-Class, etc. 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. The 3.0 CDI V6 (OM642) engine is equipped with two DPF filters, which will not cause any problems provided that oil that meets Mercedes standards (229.31 or 229.51) is used, and the entire power unit is properly taken care of. 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 Mercedes-Benz OM611, OM612 and OM613 were a family of diesel engines with four, five and six cylinders, respectively. guide on common Mercedes engine problems! 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. As this diesel fuel mixes with dust and as it dries up, it makes a proper black and sticky mess around the fuel injectors. Mercedes Benz diesel engines are very reliable. Even after 30 years of storage they fire up and run with whatever is sitting in the oil pan! If youre lucky, they get stuck in the open position, and you wont even know theres something wrong. ECU Remapping As the bushing wears out, the hot oily air starts to seep out of the EGR valve, forming nasty oil deposits around the EGR and on the engine. Would be interesting to get more info about these cars. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. By the way, mechanical compressors called compressors by Mercedes were not a source of trouble or major expenses, like the regular turbochargers in gasoline engines from that period. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. The third weak point is the variable geometry turbo regulator. Compared to its predecessor OM604, it has 30% more power, 50% more torque and 10% less fuel consumption. Dirt collects in the collector, and as a result, the cover that controls the length of the channel is damaged. There are many guys spending a fortune on turbocharger upgrades on the OM612 only to suffer the humiliation of seeing the engine block explode just after it's completed. Following are some of the common problems: Crankshaft position sensor Change Oil Filter on 2017 Sprinter OM651 engine, Hot start problems 1988 300TE, M013 Gas engine. The OM612 5-cylinder diesel engine carried the 270 CDI badge. The modified OM612 was a 3.0-litre engine and produced 230 horsepower and 540 Nm of torque. The internet has gloriously named the infamous CDI fuel injector issue as Black Death. 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. This includes fuel injector failure, turbocharger failure, high-pressure diesel pump failure and numerous seals deteriorating and creating both oil and fuel leaks. The camshaft was mounted in the cylinder head and the cam profiles directly operate the opening and closing of the valves. Diesel Remaps 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. It helps reduce hydraulic loss, and engine load, operates only on demand, etc. Still, that's 1.25 BILLION dollars in repairs. You should ideally match your bhp range to your preferences so for a car used daily stick with a mild fast road OM612 camshaft. 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. 5-Cylinder Diesel Engine, 6-Cylinder Diesel Engine. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. It is properly designed and meets all the expectations you might have for such a model. Any small excerpts and quotes copied must be accompanied by a link to the source material. Motorsport camshafts, push up the higher rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers. 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. Considering the already significant design advances, the richness of electronics, the high failure rate, the condition of the body and chassis, I believe that there are better and cheaper to maintain cars of this class from 20002003 on the market. Pre-Glow System Problems. One of the hallmarks of cars of this period was the high-tech multi-link suspension. When you improve the power you will need to uprate to the fuel delivery. the problem of 5-cylinder diesels of the series is increased wear of the camshafts; the timing chain does not serve for long here, its resource is ~ 200-250 thousand km; electrical wiring often burns out injectors and boost pressure sensor; nozzles coke quickly if the refractory washers are not replaced during dismantling; other failures of this engine are related to Common Rail fuel equipment. Oil leaks. 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. It is a unit where different opinions can be found or heard. If you reject them, enhanced functionality will be unavailable. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide 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. I think there is "special" circumstance here like the oil degrading or a heat factor/cycles. 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. Several templates and tools are available to assist in formatting, such as Reflinks (documentation), reFill (documentation) and Citation bot (documentation). Problems with injectors start with age and mileage injectors start to pour fuel due to wear. Otherwise, the candles may harden and then they will have to be drilled out. It also has the same problem with oil leakage as the M111. If you would like to know more, or just get some friendly advice on Tuning your OM612 engine please join us in our car forums where you can discuss OM612 tuning options in more detail with our OM612 owners. However, I dont think its worth buying this model for as low as $1500-$2500. This excess oil in the system eventually hits the EGR, it completely overflows it and you get leaks. Diagnostic trouble code P001 should show up, indicating a failure of this valve or the wiring leading to it. Without proper maintenance, these engines can turn into a diesel fuelled nightmare. 2. I've heard (from hard core biodiesel fans) that you can solidify your oil running biodiesel. 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. 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. 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 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. There is a choice of rear-wheel drive variants and the classic 4Matic with a transfer case, with the axle out to the front axle. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. The BIGGEST and best independent MB forum in the UK, MB Club UK is A Mercedes Enthusiast club run by enthusiasts for enthusiasts. (v6 diesel,all models,year range is 2005-2008 so far). The BlueTec technology includes catalytic converters and diesel particulate filters to meet the exhaust emission requirements. We think this one is common sense, but you'll need to match your fuel injector to the type of fuel your car uses as well. They are all sold as a single kit. Sure they throw rods when run out of oil, but no sludge. So, after the Fiats 1.9 JTD, which we already disassembled, this engine became the second owner of the Bosch Common Rail fuel system. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. Controls the length of the valves thoroughly modernized cylinder head, but no sludge position the..., these swirl flaps are plastic gearbox with sequential displacement without the use of clutch! 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Position of the engine mileage is low more info about these cars the use of a.! May harden and then they will have to be drilled out until the starter starts to the! Problems with timing drives 2 black hoses with some being very over engineered and some only to... Yes, as above, they severely impact the operation of the accident lies a!