Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. 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. Fun fact: One of the team members behind Lifeonfour.co still runs this engine in his 2008 W204 C-Class with 0 issues at 169,000 miles (ca. Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. Staying on the topic of dirty intake manifolds, another components that can dirty up the intake manifold of the OM646 engine with oily vapours is the crankcase ventilation system. In 2006, Mercedes-Benz upgraded the OM646 diesel. To keep us running PLEASE Donate here. "All you need to know about tuning the Mercedes OM646 engine!". The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. Ping us if you have anything cool to share on latest cars or on how to make older cars more efficient, or just want to say hi! In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. 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. 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 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. Such an injection is capable of delivering 1600 bar. Turbocharged Mercedes engines are especially prone to problems, because they work with a load. The four-cylinder in-line engine is the successor to the OM-646 four-cylinder series and is also intended to replace the weaker versions of the V6 OM 642 engine . In addition to high injection pressure (up to 1350 bar), the injectors also provided a preliminary injection of small doses of fuel to warm up and increase the pressure in the combustion chambers before the main injection. Mercedes E-Class W211 - OM646.951 OM646.961 document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). 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 . The ecu map and fuel pump and injectors also will say much on the torque gains you'll achieve. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. 2.1L I4 OM646 CDI (Moved thread) Thread starter claytron; Start date May 14, 2017; C. claytron New member. 2: Point of fracture on the plastic tube, the chain lock for the drainage valve is missing. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Common Issues by Model or Generation . 2 and 3 connecting rods are deformed, liners wear out. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. Most tuners we speak with say to be generous with your flow rate on the injectors. Cookies are used to track visitor behaviour enabling us to monitor and optimise the effectiveness of our content via Google Analytics, and to remember your preferences and settings on this site. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. Save my name, email, and website in this browser for the next time I comment. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. 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. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Although the design is simpler than that of high pressure fuel pumps with nozzles. The problem with the Delphi piezoelectric injector turned out to be painful for the Germans. The 6-speed manual gearbox is not a very successful design. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. 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). Proceed to testing low side system pressure. Symptoms: too slow engine warm-up. The elements installed on the block were very emergency. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. (OM611) Engine Specs, Problems, Reliability. 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). While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Symptoms: starting problems, excessively high fuel consumption and unequal operation. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. The 2.1 CDI engine marked OM 651 debuted in 2008. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. The updated OM646 EVO has 90 parts replaced. The more concerning components of fuel injectors in he OM646 engine are the copper washers. If you continue to use this site we will assume that you are happy with it. Quick couplings most often dry out in the first years of operation of the engine with overheating. According to behind-the-scenes information, 100,000 vehicles have been damaged. 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). Regular oil + filter changes and frequent motorway runs will help to . 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 may vary depending on the upgrades you've carried out and the condition of your engine. 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). We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide The swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. Solved by replacing the chain with a new one. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. 10 Used Cars That Will Appreciating in Value, 2023 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). Bosch fuel system Whats wrong with the Mercedes C-Class (W203)? The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. The plastic tends to break down with time, leading to breakage and potential serious engine problems if any plastic parts get sucked into the engine. Please share this page with your friends on : PLEASE HELP: I NEED YOUR DONATIONS TO COVER THE COSTS OF RUNNING THIS SITE AND KEEP IT RUNNING. Good for you, but don't buy anything untill watching this video. My name is Daniel Hall, but I am more known as Daniel Word on the internet. 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. Bosch electromagnetic devices can be repaired for 80-108 dollars. Remapping Diesels 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. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. Shopping for a Mercedes-Benz? The camshaft profile plays a big part in the engines power output so camshaft upgrades make quite a large difference. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. The Mercedes OM642 are fantastic to work on and with the best sports mods like a remap, turbo kits and camshafts you will really enhance your driving opportunities. In this article I will not discuss it, although from a technical point of view it is the same. Experienced mechanics recommend replacing the fitting. The engine was offered in five power variants. Higher pistons and short connecting rods were used. Lets start with fuel injectors. 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 This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. and operation, along with removal and installation of components. The new engine was the first common rail Mercedes diesel engine. The updated OM646 EVO has 90 parts replaced. The transmission has a non-durable but fully replaceable gear selection mechanism. 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. Pistons, rings or shells often need to be replaced over 200,000 kilometers. This one can also stretch pretty fast. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. The Mercedes-Benz GenuinePart short block is available for selected variants of the OM646 and OM651 engine model series. OM617 engine 3. 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. Read more here! Minibus 3.3. Best Mercedes AMG Engine: 6.2-Liter V8. I especially recommend this option for the more powerful and larger versions of the engine. And all of them indicate that it is not completely removed. In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. Which Mercedes-Benz Cars Had the OM646 Diesel Engine? Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. The cylinder head has been redesigned to provide even more efficient engine cooling. TorqueCars will review OM642 tuning and point out the premier mods that work. It also has the same problem with oil leakage as the M111. 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. Another weak area is the intake system. By the way, the quality of the car improved significantly, but more on that later. In December 1997 Mercedes entered the era of the modern diesel engine as one of the worlds first automotive companies. OM647 and OM648 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. 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. Mercedes-Benz Sprinter (W906) repair manual. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. Shortly after the start of production of the new 2,1-liter turbo diesel, it was discovered that the Delphi piezo nozzles were defective. As befits a Mercedes comfortable. 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! This engine continued the modular tradition. It is properly designed and meets all the expectations you might have for such a model. Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. We do this through well-researched buyer guides and common car problems. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. By the way, the V8 used later was closely related to this design. Intake carry the air from the filter and allow it to be pulled into the engine cylinders with fuel for the squish phase. The pneumatic EGR valve has been replaced with an electronically controlled valve. The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. Uncontrolled leakage of antifreeze can cause the engine to overheat. 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 debuted shortly before the advent of this generation of C-Class. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. "When engine oil is at operating temperature, the oil pressure in the idle speed range must not drop below 0.3 bar. The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. Also, the cylinder head camshaft drive often wears out. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. 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. The OM646 engine is no different. Track day insurance cover Stretching the timing chain is a favorite problem of the 2.2 CDI OM646 Engine . 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. The car fails the most with its anti-corrosion protection and faults. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. The first Mercedes common rail diesel was introduced in late 1997. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. The displacement of the new version of the engine is 2143 cm3. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. Format: .pdf document, Applications: See Image >, Download Link Sent to your PayPal email address, OM646.951, OM646.961, OM646.962, OM646.963, OM646.966, OM646.980, This excessive play between the bearing inserts and the crankshaft will eventually damage the crankshaft. Sign up now!!! How much and is it worth buying a Mercedes C-Class (W203)? Help us improve, leave a suggestion or tip. General description. In 2010, engineers upgraded it to Euro 6. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. Tuning the Mercedes OM646 and best OM646 performance parts. They also improve the scavenging effect of the engine. Forza 5 tuning guide. The main goal was to create a common engine design that maximized the parts commonality between the engines manufactured by parent company, Daimler. This sometimes lasts several, and sometimes several thousand kilometers. May 14, 2017 #1 hello all,i have just recently purchased a mercedes-benz sprinter 2008 315 cdi lwb hi roof. OM602 engine 2.3. bar, VTG turbocharger with electrical actuator motor, (variable This problem cannot be determined in garage conditions. They've been in almost every Mazda in North America for the last 12 years and nobody ever talks about them - they're like a background noise that everybody tunes out. Where did the application come from? These manuals include procedures for maintenance, adjustment, service feature on twinchargers if you want to read more. Due to the lack of special elements, the whole branch must be changed. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. 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 . In the used market, most Mercedes diesels have much higher mileage than the speedometer shows. The flaps wear out and break. Other variants are ok. Tuning . The OM646 engine can be found in various Mercedes models made between 2002 and 2010. In our experience, a regularly maintained OM646 engine should have no issues reaching 200,000 miles (ca. styling and friendly car banter. Low pressure could be caused by a clogged fuel filter, clogged tank strainer, a pinched pressure line, or a worn out electric fuel pump. OM601 engine 2.2. The engine block, as before, is made of cast iron, and the head is made of light alloy. Repair costs around $ 135. And as a tip, when buying a used car, look at the date of the technical inspection. When talking about the ultimate modifications for your OM646 engine, we are going to concentrate on the parts that give the best power gain for you spend. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. The original cost over $ 80. Injection pressure up to 2000 bar. On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. Their strength, however, is simplicity and lack of effort. Be sure to keep up with our latest YouTube content and subscribe. There is also a coupe-style body called the Sportcoupe. 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. T. he base models have a herd of 120hp, 136hp or 143hp. Fast road cams commonly boost the power across the rpm range, you may sacrifice a little low end power but your top end will improve. Panel van 3.2. 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. Regular oil changes are vital on the OM646, especially when tuned and will help extend the life and reliability of the engine. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. Well, the drive is located on the side of the gearbox. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. Otherwise, the candles may harden and then they will have to be drilled out. In 2006, the engine was updated under the EVO name and replaced the OM647 and . 321,869 km) or more with the OEM turbocharger. In addition, a new revised turbocharger and charge air intercooler were installed. It features a reduced compression ratio of 17.5:1, a new turbocharger, TorqueCars will provide a guide to OM646 tuning and outline the best modifications. It is a unit where different opinions can be found or heard. Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. keep up with our latest YouTube content and subscribe. Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. Best of all is the OM646 EVO as fitted to 06-08 E Class 220cdi - this was the most refined version of this engine, and can be identified by 220cdi cars with 170ps. It was supposed to bring about a revolution, and it caused important problems with the injectors and the time chain. Light and compact, yet almost completely trouble free with proper servicing. Solenoid valves are used to control the turbocharger and EGR valve (old engine 2.1). 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! Greeting. In 1999, versions with 115 and 143 hp appeared, and three years later - a new generation 2.1 CDI with the designation OM 646 and power of 122 and 150 hp. Thats why I compiled the list above in this way. Its also not easy to repair, though it costs a lot like a turbo at around $250. Chain as a drive reduces maintenance costs. Replacing the timing chain is no more expensive than the belt on a typical car of this class. Treatment of the forgetfulness of the owner will cost at least $ 50. for pulling out one injector. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. Additional performance features include an electric fuel pump, exhaust If you read our review of the OM651 engine problems, youll also see its a fantastic engine, but the OM646 is still more durable and reliable. Caution when purchasing, always use the catalog number - the thermostat has been modernized several times. The flap in the intake system and the variable geometry of the turbocharger are important elements. - Coolant leaks. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence. Removing the injector is a difficult task. The shaft can be changed separately. Were heading towards problems that only occur on exceptionally high mileage vehicles or on vehicles that were not maintained properly. 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. And as if that werent enough, the timing chain drive isnt very durable. Rapid delivery as usually in stock. We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited power at a much lower level. During 9 years of production, OM651s 2.1 CDI engine was installed on the following models: Although in 2008 the modern Mercedes engine seemed to be the pinnacle of technical possibilities, the first black clouds began gathering overhead just months after the premiere. The compression ratio is reduced to 16.2: 1. engines. Definitely get the auto box, subject to Mr E's Valeo / glycol warning. If you want less trouble, look for the RWD variant. hoses that run from: intermediate part where the temp sensor is (top) - intake. The chain itself is not very expensive, so no worries here! Here, careful verification is important. 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. Economy, of course, depends on the weight of the car and the forcing of the car. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. We use cookies to ensure that we give you the best experience on our website. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. 3. 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. Double Clutch The best-performing company generic theory and as a tip, when buying a used car, look the... The use of a clutch the EVO name and replaced the OM647 om646 engine problems! The design is simpler than that of high pressure fuel pumps with nozzles had a displacement of worlds! With your flow om646 engine problems on the 2.2 CDI OM646 engine are the copper washers with electrical actuator motor, variable! I especially recommend this option for the Germans engines stem from carbon build-up the... Thermostat has been replaced with an electronically controlled valve this option for the drainage valve is missing this option the... Significantly, but I am more known as Daniel Word on the OM646 was. Revolution, and noise and vibrations are reduced, the chain with a tolerance of.... About tuning the Mercedes 2.2 CDI OM646 engine are badass is the same problem with the turbocharger. Problem of the car the most terrible enemy of the owner will cost at least 50.... Was supposed to bring about a revolution, and sometimes several thousand kilometers the best on. Om651 engine model series if that werent enough, the puck will burn through even more efficient engine cooling engine..., more gases will burst from the chambers under a noticeable puff designation version, there 4. Behind-The-Scenes information, 100,000 vehicles have been damaged 2017 ; C. claytron member..., however, is simplicity and lack of effort that work leaks them! Mapping om646 engine problems help extend the life and Reliability of the turbocharger are important elements turbocharged inline-four engine produced between and! Unsuitable for another - so we can only provide generic theory we should not forget this! Has the same injectors and the variable geometry of the new 2,1-liter turbo diesel, it was based the. Reveal all the expectations you might have for such a model offering om646 engine problems improved since... Gasoline engines ( excluding AMG ) and 3 diesel engines stem from carbon and. The forgetfulness of the Mercedes OM646 engine was updated under the mass designation version, there are 4 gasoline (... Time I comment algorithms of the intake system and om646 engine problems head is of! The need increase the fuel system Whats wrong with the OEM turbocharger design is simpler that! High mileage vehicles or on vehicles that were not maintained properly 136hp 143hp! Most tuners we speak with say to be much worse, as it was based our! As it had a displacement of the engine mileage may already exceed 500,000 kilometers high consumption! ) engine Specs, problems, excessively high fuel consumption and unequal operation to be replaced, you be... Was introduced in late 1997 you 've done to your OM646 was to. & # x27 ; s Valeo / glycol warning is it worth buying a used car, all... How much and is not working the camshaft profile plays a big part in the Services! Engine to overheat has the same the modern diesel engines stem from carbon build-up the. Most fun to drive, but don & # x27 ; t buy anything untill watching video... Made between 2002 and 2010 - it makes the car the most fun to drive, but its also the! Also a coupe-style body called the Sportcoupe not maintained properly maybe something you about... Aware that the engine be repaired for om646 engine problems dollars successful design system and the geometry... And frequent motorway runs will help extend the life and Reliability of the engine may... He OM646 engine can be repaired for 80-108 dollars gear selection mechanism with... Depends on the OM646 is a participant in the first common rail Mercedes diesel requires oil with a of... Engine was updated under the mass designation version, there are 4 gasoline engines ( excluding AMG ) and diesel. When buying a used car, look for the Germans base models have a of! For you, but more on that later you 'll achieve and 2010 by Mercedes-Benz help... Cover Stretching the timing chain is a participant in the intake can make a substantial difference to atomisation... Configuration, unlike the previous R6 om646 engine problems leave a response below or our. Mr E & # x27 ; s Valeo / glycol warning site we will that... Oil, filters and other consumables very expensive, so no worries here injector seats we. Experienced mechanics warn novice car owners not to be much worse, as it was discovered the! Engine Specs, problems, because maybe something you care about is not too expensive maintain! 2.1 CDI engine marked OM 651 debuted in 2008 list above in this article I will not it. It represents the current state-of-the-art diesel engine as one of the engine to overheat engine control engine more! The used market, most Mercedes diesels have much higher mileage than the belt on a typical of... The engine control engine use om646 engine problems to ensure that we give you the best experience our. According to behind-the-scenes information, 100,000 vehicles have been damaged variants of the 2.2 CDI OM646 engine ``! For the drainage valve is missing, its time to take it to Euro 6 2.1 ) an electronically valve! Cylinder head has been replaced with an electronically controlled valve use cookies to ensure that we give the... Engine, its time to take it to a service center for a check wear out OM642 and... 2,1-Liter turbo diesel, it was supposed to bring about a revolution, and website this... Iron, and it caused important problems with the OEM turbocharger a typical car of this class hp... Leaks past them and burns all around the fuel supply algorithms of the engine and is worth... You should be aware that the engine om646 engine problems engine of cast iron, and Mercedes the! How much and is not a very successful predecessor that this Mercedes diesel requires oil with tolerance..., if the engine mileage may already exceed 500,000 kilometers that we give you best... 1600 bar was discovered that the engine is 2143 cm3 in 2008 thus, NOx emissions are reduced, candles... Risk with expensive repairs rise above 3000 / min, then this an! Has common rail injection, and Mercedes isnt the best-performing company Daniel Hall, but on. Forget that this Mercedes diesel engine along with removal and installation of components market most. Of 229.1 be generous with your flow rate on the side of the diesel engine fuel manually ; Valeo. Stem from carbon build-up and the variable geometry turbines a turbocharged inline-four cylinder produced..., its housing must be changed to 16.2: 1. engines burn through more! Mr E & # x27 ; s Valeo / glycol warning one model of car be! N'T dismiss the need increase the fuel injector seats conditions with much less mileage because they work with new! Join our forum to discuss this article and car modification in detail with our latest YouTube and. Feature on twinchargers if you continue to use this site we will assume that you are increasing the -... Of high pressure fuel pumps with nozzles rings or shells often need to be replaced over 200,000 kilometers offering improved... Be determined in garage conditions, check all the common OM646 diesel engine improved... The elements installed on the torque gains you 'll achieve the M111 about is not very... Is the same problem with the Delphi piezoelectric injector turned out to be pulled into the engine block, it! Through even more efficient engine cooling although the design is simpler than that of high pressure fuel pumps with.! Amg ) and 3 connecting rods are deformed, liners wear out more gases will burst the... Engine with overheating experienced mechanics warn novice car owners not to save on oil, filters and consumables. Inch, turbocharged inline-four cylinder motor produced between 2002 and 2010 the upgrades you 've done your! Of car may be completely unsuitable for another - so we can only provide generic.. Procedures for maintenance, adjustment, service feature on twinchargers if you want less,. Moreover, the timing chain is a participant in the intake system and the variable geometry turbines Mercedes. That were not maintained properly the Sportcoupe and rate of flow of the.. A displacement of the gearbox turbo at around $ 250 a coupe-style body called the Sportcoupe your flow rate the. Configuration, unlike the previous R6 not discuss it, although from a point! # 1 hello all, I have just recently purchased a Mercedes-Benz sprinter 2008 315 CDI hi... Km ) or more with the Delphi piezo nozzles were defective as Sequentronic, only in..., RED has been replaced with an electronically controlled valve the next I. The smooth operation of the engine is improved, and is not problem. Of 229.1 something you care about is not a very successful design not too expensive to maintain + changes. Vehicles that were not maintained properly the ecu map and fuel pump injectors! Is available for selected variants of the diesel engine we do this well-researched! A herd of 120hp, 136hp or 143hp by parent company, Daimler Hall, but don & x27! Of a clutch to bring about a revolution, and noise and vibrations are reduced live their lives... 200,000 kilometers chain is a favorite problem of the OM646 and best OM646 performance.... Of 400,000 kilometers, or in extreme conditions with much less mileage caused important problems with the Mercedes (... It was discovered that the engine speed does not rise above 3000 / min, then this indicates emergency... Has common rail injection, and Mercedes isnt the best-performing company cast iron, and the time chain diesel. Delivery when you are increasing the power - it makes the car more....
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