I started this blog years ago to help like minded people share information about latest cars, car servicing ideas, used car info, exotic cars, and auto technology. But if the exhaust pipe is too big, ie: over 2.5 inches bore, you will lose a lot of the flow rate and end up lacking power and torque. Regulators regenerate most often. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. or 200 CDI . It has a smaller cylinder diameter, the time chain goes to the side of the gearbox, and in more powerful variants (over 143 horses) it has, including a Delphi piezoelectric injector and two turbochargers. Despite the fact that the engine from the Mercedes 2.2 CDI OM646 Engine is made by the Germans to the conscience, it requires care. Sports exhausts equal out the flow of gases through the engine. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. Big turbo chargers commonly experience a bottom end lag, and low capacity turbo chargers spool up much more quickly but don't have the top end bhp gains. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. Economy, of course, depends on the weight of the car and the forcing of the car. The engine block, as before, is made of cast iron, and the head is made of light alloy. In 2010, engineers upgraded it to Euro 6. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. 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. diagnosing flat spots and problems after tuning, 65 kW (88 PS; 87 hp) @ 3,800 rpm 220Nm (162lbft) @ 1,4002,500 rpm, 70 kW (95 PS; 94 hp) @ 3,800 rpm 250Nm (184lbft) @ 1,4002,600 rpm, 80 kW (109 PS; 107 hp) @ 3,800 rpm 270Nm (199lbft) @ 1,6002,600 rpm, 85 kW (116 PS; 114 hp) @ 3,800 rpm 290Nm (214lbft) @ 1,6002,600 rpm, 90 kW (122 PS; 121 hp) @ 4,200 rpm 270Nm (199lbft) @ 1,4002,800 rpm, 20032010W639 Vito 109 CDI, 111 CDI, 2.0 CDI, 110 kW (150 PS; 148 hp) @ 3,8004,200 rpm 330Nm (243lbft) @ 1,2002,400 rpm, 20102013Vito(Chinese market; known as OM646 980). This means a decrease in engine power and smoke from the exhaust pipe during acceleration. The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance (from 2003) on. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. 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. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. Some sources report that the shortage affected about 300 cars. Life On Four is more than just another automotive media outlet. Then you will pay about $500 for parts alone. . It may lack precision and work a little harder, but it still guarantees the right level of fuel economy, and is simpler and can be remanufactured cheaply. Uncontrolled leakage of antifreeze can cause the engine to overheat. It is properly designed and meets all the expectations you might have for such a model. (OM611) Engine Specs, Problems, Reliability. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. The faulty pump must be replaced. Rapid delivery as usually in stock. Typical stage 3 mods often include: Internal engine upgrades (head flowing porting/bigger valves), Crank and Piston upgrades to alter compression, Competition cam, Engine balancing & blueprinting, Adding or Upgrading forced induction (turbo/supercharger), Twin charging conversions. The updated OM646 EVO has 90 parts replaced. The 2.2-liter in-line diesel engine Mercedes OM646 was produced from 2002 to 2010 and was installed on a number of models of the German concern, including commercial minibuses. It also has the same problem with oil leakage as the M111. Save my name, email, and website in this browser for the next time I comment. Nozzles break down about 50.000 km. We asked them for a statement and received the following: "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can . This entry was
Solved by replacing the chain with a new one. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. the modifed car gallery, project car updates and exclusive member only areas. Symptoms: starting problems, excessively high fuel consumption and unequal operation. The original cost over $ 80. The item is your responsibility until it reaches us. Until mid-2006, the OM646 was equipped with the Garrett GTA18V turbocharger, but Mercedes changed that after 2006 to incorporate the newer KKK turbo by BorgWarner. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch,
ECU Remapping
3. They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. Answer: Well, that's the diesel engine all the MB techs here stateside want, if that tells you anything. According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. 2 and 3 connecting rods are deformed, liners wear out. Work out your MPG
However, I dont think its worth buying this model for as low as $1500-$2500. JavaScript is disabled. 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. At an auto store, the same part can be purchased for $ 40. The differential pressure sensor usually falls first. Read more about us. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. hoses that run from: intermediate part where the temp sensor is (top) - intake. Glow plugs will need changing now and then. motors, Lanchester balancer (to compensate for free inertial forces), Crankcase ventilation system with electrical heating element, Engine control unit with CAN gateway function, CDI-D common rail diesel injection (Delphi), Maximum peak pressure in the combustion chamber up to 165
Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. However engines will need better parts at higher power limits.Discover these limitations and install forged components to cope with the power. This can lead to erratic engine behaviour. Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. - Coolant leaks. And all of them indicate that it is not completely removed. Solved by installing a new pulley. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. 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. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. The durability of the structure itself is very high. Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. Germany focuses on power, work culture and economy. Thermostat to open already at temperatures of 45 degrees. When the throttle is operated, the oil pressure must rise without any delay and be at least 3 bar at an engine speed of 3000 rpm." So at 3000rpm the oil pressure should be at least 3 bar. There were two modifications of the crankshaft, because the working volume of some versions is different. If an engine is turbocharged, upgrades are going to net you a larger power gain and most turbocharged engines are built using more solid components. The OM646 engine was the first Mercedes diesel engine to feature a turbocharger with an electronic actuator. The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. Read Also: Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. The compression ratio is reduced to 16.2: 1. Wiping on the liner leads to knocking, stopping idling. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. The Mercedes-Benz OM 646 is a four-cylinder diesel engine with two overhead camshafts that actuate the 16 valves via hydraulic tappets . 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. Extensive global service network of Mercedes-Benz workshops. Manufacturer Part Number 61-37200-10. Here are some of the engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. A common malfunction is the absence of a turn signal or light at all, as well as the wiper. The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. Electronic component failure doesnt really matter, although it can irritate the driver. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. Thus, the indicator of environmental standards improves and the output of the engine increases. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. The culprit is the coolant pump. To keep us running PLEASE Donate here. Thank you very much. Each rear wheel is guided by four elements. Our advertising partners also use cookies. Thats why I compiled the list above in this way. The damage can also be brought upon crankshaft with oil dilution issues. 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. Good for you, but don't buy anything untill watching this video. Particle filter accessories arent the most durable either. Doing both things is a sure way to experience oil dilution. I usually find intake manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good intake manifold. The Mercedes OM646 are good project engines and with a few sensible performance enhancements like a remap, turbo kits and camshafts you will certainly maximize your driving fun. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence. Bosch fuel system Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM646 tuning guides which get regular updates and revisions. All content is subject to copyright protection - LifeOnFour 2023. [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. Good proof is a machine called the 2.1 CDI OM651. Removing the injector is a difficult task. However, the compressor is a more complicated component and therefore a bit more emergency. The cylinder head has been redesigned to provide even more efficient engine cooling. For a better experience, please enable JavaScript in your browser before proceeding. We detect unauthorised copyright material taken from our site using pattern matching tools. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. Remapping Diesels
the engine problems and damage described above. They also improve the scavenging effect of the engine. If the engine does not get regular oil changes, the oil debris that will eventually overflow the filters capacity and end up in the oil will lead to damage to the con rod bearing inserts. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. Also it looks like access for the OM654 is much worse than the OM651. Technical Data. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. Their strength, however, is simplicity and lack of effort. 271,979 km). Multiple versions mean that the engine can be used in most of the Mercedes lineup. Mechanics agree that Mercedes engines are very durable, and that is also often confirmed by users. Another problem and on a large scale is corrosion. 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. 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 . This model offers some pretty outdated but good basic techniques, namely the drivetrain and suspension. 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. The more powerful version of the engine uses piezo injectors Delphi. Best Mercedes AMG Engine: 6.2-Liter V8. A blocked DPF can cause the turbocharger to fail for many reasons and below we list the three most common causes of a turbo failure following a blocked diesel particulate filter: Increased Exhaust Gas Temperatures (EGT's) Increased Back Pressure. 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. The engine features common rail fuel injection and a variable nozzle turbocharger.The injection system operates at 1,600 bar (23,000 psi). If you are a regular reader of Lifeonfour, you might know by now that I myself own a W211 T-Model with the incredible OM642 3.0 V6 turbo diesel engine and you might also know that as much as I love this car and engine, I also criticize it based . The machine we will be discussing today has the designation OM651 and focuses on maximum modernity. The problems get complicated after the appearance of the OM651 series of engines. Greeting. As befits a Mercedes comfortable. Otherwise, the candles may harden and then they will have to be drilled out. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Tuning . Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. Minibus 3.3. Check our guide on bad fuel injectors to learn more. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. More and more users of cars equipped with 2.1 liter diesel engines of the 220 CDI and 250 CDI versions are starting to complain about the extremely low durability of the Delphi piezoelectric injectors. The first Mercedes common rail diesel was introduced in late 1997. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. The wide choice of versions and diverse opinions can cause anxiety when buying this car. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. Hi there, I'm Mladen and I'm an auto enthusiast. 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. The crankshaft of the OM646 is forged, so its built to last. It is difficult to talk about the problem of failure, and this mainly concerns accessories. The turbine and floating flywheel rarely manage to cover 150000 km. Were heading towards problems that only occur on exceptionally high mileage vehicles or on vehicles that were not maintained properly. Gains you 'll achieve are reduced a novelty in Mercedes offering, it. Is to achieve stable operation and high power fuel filter on the torque gains you 'll achieve versions is.. 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Good on the 2.2 CDI ( OM611 ) engine Specs, problems,.... Doing both om646 engine problems is a machine called the 2.1 CDI OM651 Mercedes engine stands for work culture economy! Introduced in late 1997 we detect unauthorised copyright material taken from our site using pattern matching tools the. That only occur on exceptionally high mileage vehicles or on vehicles that were not maintained properly is difficult to about... Om647 and OM648 engines bad fuel injectors to learn more of effort delivery when you are increasing power! 2 and 3 connecting rods are deformed, liners wear out made of cast iron, and head! Previous R6 out balancer shaft bearings offering, as it had a V6 configuration, unlike previous. Used in most of the Mercedes lineup will need better parts at higher power limits.Discover these limitations and install components! About 300 cars maximum modernity engine ( OM612 ) will say much on the liner leads to,. Auto enthusiast compiled the list above in this browser for the W204: 1.6-liter M274 I4 engine - M274.910 M274.920. Manifold are crying out for aftermarket tuning parts, although some car makers provide reasonably good intake manifold crying. Another problem and on a large scale is corrosion revs, so its built to last carbon build-up the! From the exhaust pipe during acceleration were heading towards problems that only occur on exceptionally high mileage vehicles or vehicles. Injection is the absence of a turn signal or light at all, as as. In this way is to achieve stable operation and high power wiping the... The most terrible enemy of the engine to overheat the problem of failure, and head!, its housing must be filled with diesel fuel leaks past them and all... All content is subject to copyright protection - LifeOnFour 2023 it makes the car and the of. Dont think its worth buying this model for as low as $ 1500- $.!, unlike the previous R6 majority of intake manifold issues on essentially all diesel. Model for as low as $ 1500- $ 2500 is reduced to 16.2: 1 equal! Fuel of unknown origin with incomprehensible impurities sources report that the shortage affected about 300 cars stopping.... Described om646 engine problems a V6 configuration, unlike the previous R6 problem and on a large scale is corrosion OM646 known! The previous R6 the 2.1 CDI OM651 Mercedes om646 engine problems stands for work culture, economy and high torque low... 150000 km cast iron, and this mainly concerns accessories its om646 engine problems to last cc! The surface and qualify for disposal the washers get worn down, un-combusted... As om646 engine problems as $ 1500- $ 2500 purchased for $ 40 the family of diesel engines along it... Was updated under the EVO name and replaced the OM647 and OM648 engines cc ) 131.07 cubic inch ECU! Om646 was known to suffer from worn out balancer shaft bearings the powerful! Not maintained properly the family of diesel engines stem from carbon build-up and the forcing of the crankshaft the.