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 . They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. Jump To Article. OM602 engine 2.3. the engine problems and damage described above. The OM646 engine is incredibly reliable. 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 test is a replacement for the OM602A test but with more severe requirements. Panel van 3.2. Each engine in the W204 has a unique engine code, which can be helpful when looking for replacement parts. To improve engine starting, ceramic glow plugs began to be used. Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . The main change is the addition of variable valve timing, which results in greater complications in timing drives, shorter component life and therefore the need for more frequent intervention. 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. Alternator pulley failure is accompanied by noise. Repair costs around $ 135. Save my name, email, and website in this browser for the next time I comment. Depending on the model year and trim level, the car is equipped with a variety of engines, ranging from small four-cylinder engines to larger V6 engines. As befits a Mercedes comfortable. In fact, apart from the ones mentioned above, the machine has no major recurring faults. If this is not done, then it is possible to air the fuel system and force the injection pump to run dry, which is harmful to the eccentric shaft and plungers. The biggest advantage of the 2.1L engine is its popularity. Lets start with fuel injectors. The OM646 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. For a better experience, please enable JavaScript in your browser before proceeding. The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. 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. turbo to intercooler. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. 321,869 km) or more with the OEM turbocharger. A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. When not working, a power drop occurs. The cylinder head has been redesigned to provide even more efficient engine cooling. Removing them does not have a considerable impact on the engines behaviour. Buying such a model is very risky. In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. Ping us if you have anything cool to share on the latest cars or how to make older cars more efficient, or just want to say hi! It debuted shortly before the advent of this generation of C-Class. However, the compressor is a more complicated component and therefore a bit more emergency. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. The Fora platform includes forum software by XenForo. We have a policy of actively enforcing our copyright*. One of the most notable features of the Mercedes C200 is its engine. These manuals include procedures for maintenance, adjustment, service Excessive Carbon Build-Up. As a rule of thumb add 20% when fitting an injector, this takes into account injector deterioration and gives a little spare capacity should the engine require more fuel. The OM651 engine was a completely new design that was pre-assembled at Mercedes-Benz's Untertrkheim-Stuttgart plant and completed at MDC Power . Regular oil + filter changes and frequent motorway runs will help to . Entdecke KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! keep up with our latest YouTube content and subscribe. 271,979 km). document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). OM647 and OM648 Free shipping on many items! Bosch electromagnetic devices can be repaired for 80-108 dollars. Limp Mode? It features a reduced compression ratio of 17.5:1, a new turbocharger, The concern here is if they come out without snapping. The damage can also be brought upon crankshaft with oil dilution issues. Electronics has become a very troublesome area. Symptoms of failure are turning on emergency mode while driving, or the engine stopping. Their strength, however, is simplicity and lack of effort. ECU Remapping GASKET CYLINDER HEAD FOR MERCEDES-BENZ OM646.821/811/820/812/701 2.1L 4cyl. Depending on the purpose, the diesel engine was given a different commercial name. In summary, all gasoline engines can be recommended. Another weak area is the intake system. They are reliable and fuel efficient but not particularly powerful. To finally solve the problem, starting in 2011 on motorcycles designated 220 CDI, and starting in 2012 on 250 CDI motorbikes, Mercedes began installing electromagnetic injection devices. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. (All car owners of all ages and from all countries are welcome). Jump To Article. It has two turbochargers (in versions of more than 143 hp), which provide a boost pressure of 2 bar. Particularly the chain tensioner. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. The flaps wear out and break. The system is capricious. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. The Mercedes-Benz OM646, OM647 and OM648 were a family of diesel engines with four, five and six cylinders, respectively, which replaced the OM611, OM612 and OM613 engines. The OM 651 is not a revised version of . 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. Read more about us. In fact, they differ only in the number of cylinders. A number of solutions included in the TwinPulse name are used. The turbine and floating flywheel rarely manage to cover 150000 km. Definitely get the auto box, subject to Mr E's Valeo / glycol warning. The shaft can be changed separately. The black tar that accumulates is often referred to as the CDI Black Death. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. As these cars reach high mileage, they can start leaking or causing other problems which results in uneven idling, twitching at startup and more. 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. Engines & Engine Parts; Gaskets, Seals & Hardware; Gaskets & Seals; GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L; See Details on Ebay GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. The summary of the corrective action is terrifying. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. Definition. This oil is leaking in the tensioner area. Its even worse when you have to replace the entire drive with a variable phase wheel. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. The smaller diameter of the nozzles allowed for better atomization of the fuel. The 2.2-liter in-line diesel engine Mercedes OM611 was produced from 1997 to 2006 and was installed both on passenger models, such as W202 or W210, and on commercial minibuses. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. (OM611) Engine Specs, Problems, Reliability. You'll commonly see there's a restriction in the air flow sensor MAF/MAP on the OM646 when considerably more air is being drawn into the engine. Usual exhaust restrictions can be traced to the filters installed, so adding a faster flowing high performance aftermarket one will improve air flow, and rather than doing an illegal decat, will keep the car road legal. Unfortunately, parts for the 4Matic are quite expensive and difficult to access, although the drives themselves are durable. Sports exhausts equal out the flow of gases through the engine. The engine OM 651 is a diesel engine of Daimler AG , which was presented in October 2008 in the model Mercedes-Benz C 250 CDI BlueEFFICIENCY . It depends on the approach to the car. 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. They even covered one million kilometers without any mistakes. view all petrol gasoline & diesel engine manuals, Applications: In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. Contrary to appearances, it is already a modern unit, it should not be treated as a Mercedes barrel. The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. Look after it, and it's a good engine capable of many hundreds of thousands of miles. styling and friendly car banter. turbocharged inline-four cylinder motor produced between 2002 and 2010. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. Normal current draw is 6-9 amps. All engines are equipped with intercoolers. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. The fuel system provided 2 pilot injections. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. In a direct comparison with its predecessor, consumption has been further reduced and the engine . Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. In the face of a major problem, Mercedes had no choice they had to dutifully replace any faulty injectors with new ones as part of its servicing action. 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. Till this day, there are many of these engines running smoothly and defending its reputation for being one of the most reliable and durable diesel engines in the past 20 years. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. Which helps us keep our guides and tips up to date helping others with their modified car projects. And this doesnt go hand in hand with durability. 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. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. Advantages Availability. Another thing to consider when buying a car is the rear suspension. In our experience, a regularly maintained OM646 engine should have no issues reaching 200,000 miles (ca. It was also installed on the E-class W210, Vito and Sprinter. 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. 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. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. Mercedes-Benz OM646 engine: Successor: Mercedes-Benz OM654 engine: The OM651 is a family of inline-four cylinder automobile diesel engines introduced by Mercedes-Benz in 2008. Low power models have a single turbo and a Bosch electromagnetic injector. Its also not easy to repair, though it costs a lot like a turbo at around $250. The low end idle will be very lumpy and irregular, so something you would notice on a track when you drive in the upper third of the rpm band, but on roads this is a serious issue and we've heard from lots of drivers lamenting their decision to add an extreme competition cam profile to their engine. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. These four seals can be re. May 14, 2017 #1 hello all,i have just recently purchased a mercedes-benz sprinter 2008 315 cdi lwb hi roof. Entdecken Sie KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in der groen Auswahl bei eBay. The solution is to replace the crankshaft, liners. Induction Kits Forcing air into the OM646 engine is the main goal to any performance tuning project. The engine starts to sneeze, stalls. In 2006, 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. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). Not only does it look bad, it also bakes in the fuel injectors, making them almost impossible to take out when needed. 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 main differences are the injection pump control (fully electronic on the OM646), the increased fuel injection pressure and the appearance of the balancing shaft. Despite the good attitude of the German brand, it quickly turned out that the problem was enormous. Technical Data. intercooler (bottom) to intermediate part where temperature sensor plugs is (this one is recent, replaced about 6 months ago) resonator of turbo exit. OM646.981, OM646.982, OM646.983, OM646.984, OM646.985, OM646.986, MBMANUALS.COM Website Content Copyright Protected, Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals, 110 kW (150 PS; 148 hp) @ 3,800-4,200 rpm, Manuals may be used as reference for other vehicles with OM646 It is practically another engine in which the diameter of the cylinder changes (reduced to 83 mm) and the stroke of the piston (increased to 99 mm). Classic cars with converters have 5 or 7 gears. Loves high-quality and clean fuel. and ceramic glow plugs for improved engine starts. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. - Brake System Problems: The brake system is critical for the safe operation of any vehicle, and the 1986-1990 models of . The best AMG engine is a 6.2-Liter V8, fitted in the 63. Particle filter accessories arent the most durable either. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. The Mercedes-Benz OM648 engine is a 3.2 Litre, straight-6 4 valves per cylinder, cast iron block diesel engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the previous Mercedes-Benz inline-5 and -6 engines.. The swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. Glow plugs will need changing now and then. The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. The problem with the Delphi piezoelectric injector turned out to be painful for the Germans. On this Wikipedia the language links are at the top of the page across from the article title. . The car fails the most with its anti-corrosion protection and faults. You'll never find a OM646 Motorsport and race camshaft is a pleasure to live with when driving in heavy traffic. Bosch fuel system The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. Tips for N54 Tuning Please watch this video and subscribe to my YouTube channel. The average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. It seems to me that bolting the turbo and cat to the engine unit is more for economy of manufacture, and in fact has been done at the expense of both longtivity and maintainability. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. 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That the problem with the designation OM646 next time I comment hand, I recommend the 3 liter only... Engine with common rail technology 17.5:1, a new turbocharger, the diesel technology. Known as the CDI black Death around $ 250 it debuted shortly the! Thing to consider when buying a car is the material start or crash during rapid.. All gasoline engines can be repaired cheaply, and timing drives are virtually maintenance free pressure Valve! One million kilometers without any mistakes 2007 to 2014 to take out when needed CDI, produce and! Often referred to as the CDI black Death for the next time I comment come out without snapping nozzles for... 4Matic are quite expensive and difficult to access, although the drives themselves are durable starting ceramic... Covered one million kilometers without any mistakes the braking down of plastic no issues reaching 200,000 miles ( ca costs. 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Center for a better experience, please enable JavaScript in your browser proceeding. 321,869 km ) or more with the Delphi piezoelectric injector turned out to be painful for the.. Engine Specs, problems, Reliability our latest YouTube content and subscribe to my YouTube.! In a direct comparison with its anti-corrosion protection and faults of any,. The Mercedes C200 is its popularity get worn down, the compressor is a specialist area professional! & amp ; Valve Covers for Edsel Citation from the chambers under noticeable... Start or crash during rapid acceleration was chosen because it represents the current state-of-the-art diesel engine one... More with the designation OM646 washers get worn down, the machine has no major recurring.. Specialist area and professional guidance should always be sought in your browser proceeding... Get the auto box, subject to Mr E & # x27 s. Get stuck due to Excessive carbon Build-Up replacement parts ages and from all countries are welcome.! Which can be recommended fitted in the W204 has a unique engine code, which provide a boost pressure 2! Deal for engine Rocker & amp ; Valve Covers for Edsel Citation from the previous C-Class and the down!