Jump To Article. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. The Mercedes-Benz GenuinePart short block is available for selected variants of the OM646 and OM651 engine model series. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. Click here to see my credentials (why you can trust me) and more information! Particle filter accessories arent the most durable either. Limp Mode? Please help us improve these tips by sending us your feedback in the comments box below. Plastic painting tips for car interior and exterior.Read more Tuning the 150bhp Diesel Astra Sport HatchRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK Modifying & Tuning / Car Mods Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. 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. Proceed to testing low side system pressure. feature on twinchargers if you want to read more. Here is the complete list based on the engine variant (source; Wikipedia): If youre in a rush, heres a quick summary of all the common OM646 diesel engine problems: For those of you that want to know more details, make sure you continue reading as we dig deeper into these concerns and more. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. Note the presence of this solution in the S203 model, namely in the C class car estate. . It was also installed on the E-class W210, Vito and Sprinter. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. 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. Read Also: Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. The test is a replacement for the OM602A test but with more severe requirements. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. Injecting fuel prior to direct injection causing combustion of the fuel charge makes it possible to reduce the temperature in the combustion chamber due to fuel vaporization, thus lowering average operating cycle temperatures and pressures. . The third weak point is the variable geometry turbo regulator. Clean your DPF Equipment failure is caused by mileage and wear. Many owners unknowingly did not change the refractory washers under the nozzles. 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. 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). Loves high-quality and clean fuel. In 2006, the engine was updated under the EVO name and replaced the OM647 and . Typical stage 2 mods often include: induction kit, Ported and polished head, high flow fuel injectors, Fast road cam, fuel pump upgrades, Sports catalyst & performance exhaust. I advise what to choose and what to pay attention to. Sorry, in order to post a comment, you must be logged in. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. 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. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. The engine block, as before, is made of cast iron, and the head is made of light alloy. Privacy Policy: We do not store or collect personally identifiable information. The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. At the turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent to service every week! They are reliable and fuel efficient but not particularly powerful. One of the hallmarks of cars of this period was the high-tech multi-link suspension. diesel particulate filter), Intake port shutoff (EKAS) with electrical actuator motor, Exhaust gas recirculation with electrical actuator motor, Oil level switch and oil temperature sensor, 20032010 W639 Vito 109 CDI, 111 CDI, 2.0 CDI, 20102013 Vito (Chinese market; known as OM646 980). While the turbocharger used by Mercedes on the 2.1 CDI OM651 engine was extremely durable, on the more powerful model with the Twin Turbo system, the airflow control malfunction occurred. The failure of the solenoid valves leads to a decrease in the power of the Mercedes engine. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. engines. The compression ratio is reduced to 16.2: 1. Most tuners we speak with say to be generous with your flow rate on the injectors. All engines are equipped with intercoolers. If the bed was not particularly damaged when the liners were lifted up, then experienced mechanics can still save it. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide 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. 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. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). The OM646 engine can be found in various Mercedes models made between 2002 and 2010. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. To remove the unit you must first remove the engine covers. Design. You will also have full access to They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. Specifications and Modifications. This entry was The displacement of the new version of the engine is 2143 cm3. The flaps wear out and break. Some sources report that the shortage affected about 300 cars. Although it worked fine initially, in most cases there were problems with shifting gears after many years. Jump To Article. It has two turbochargers (in versions of more than 143 hp), which provide a boost pressure of 2 bar. This reduces the degree in the combustion chamber and reduces the temperature value of the working cycle, pressure. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. 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. If it needs to be replaced, you should be aware that the engine mileage may already exceed 500,000 kilometers. Shopping for a Mercedes-Benz? In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. The wide choice of versions and diverse opinions can cause anxiety when buying this car. 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. [2] Its also not easy to repair, though it costs a lot like a turbo at around $250. It becomes noisy, and a delay in return can speed up the wear of the belt buckle. The good news is the high durability of the timing chain and the resistance of this engine to torture. This oil is leaking in the tensioner area. 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). The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. styling and friendly car banter. 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. Due to a faulty rail pressure control valve, the engine can also be difficult to start or crash during rapid acceleration. The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()), 150 / 4200 (170 / 3000 for turbo version), 340 / 2000 (400 / 2800 for turbo version). 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. This can lead to erratic engine behaviour. Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. Common Issues by Model or Generation . It most often crashes in the vehicle. 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. I especially recommend this option for the more powerful and larger versions of the engine. The more concerning components of fuel injectors in he OM646 engine are the copper washers. Chassis Cab 4. Its successor, designated the M272, turned out not to be much worse, as it was based on the very successful predecessor. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. The OM646 engine is incredibly reliable. Typical stage 1 mods often include: drilled & smoothed airbox, Panel air filters, Remaps/piggy back ECU, Fast road camshaft, Sports exhaust header/manifold, Intake manifolds. Fast road cams are one of the most significant mechanical changes, but they must be installed by someone who knows what they're doing and they are not always easy to source but you might find a local firm to regrind a stock camshaft. Problems with injectors start with age and mileage injectors start to pour fuel due to wear. The solution is to replace the crankshaft, liners. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. (All car owners of all ages and from all countries are welcome). A number of solutions included in the TwinPulse name are used. Problems with the throttle and pneumothorax are also typical. Greeting. 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. In a revamped car, it is slightly smaller in size, not only because of its age, but also because of its improved quality. 3. 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. hoses that run from: intermediate part where the temp sensor is (top) - intake. Entdecke 2x Luftfilter passend fr Mercedes C220 S204 W204 2.1D 07 bis 08 OM646.811 Mann Neu in groer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung fr viele Artikel! It is a unit where different opinions can be found or heard. General description. He made his debut on the C-class W202 in 1998. Please drive sensibly we do not endorse reckless driving. If you continue to use this site we will assume that you are happy with it. Germany focuses on power, work culture and economy. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. And while the parts themselves can be bought at auto stores for as little as $ 135, the repairs are quite expensive. We have this feature on twinchargers if you want to read more. For example, 180 CDI, 200 CDI, 220 and 250 CDI CDI. Larger OM646 valves, doing a bit of OM646 port enlargement and head flowing will also boost power, the fantastic side effect is it will make space for a better power increase on other parts. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, Each rear wheel is guided by four elements. Hi there, I'm Mladen and I'm an auto enthusiast. 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. However, the compressor is a more complicated component and therefore a bit more emergency. the engine problems and damage described above. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. The engine block, as before, is made of . The pneumatic EGR valve has been replaced with an electronically controlled valve. Read more about us. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. Thats why it has appeared in the range of German brands for 6 years. and operation, along with removal and installation of components. 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. 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. May 14, 2017 #1 hello all,i have just recently purchased a mercedes-benz sprinter 2008 315 cdi lwb hi roof. 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. There were two modifications of the crankshaft, because the working volume of some versions is different. The engine doesnt handle short distances well, especially in winter, when its not heated properly. So, for the replacement, the whole machine had to be removed! This is a great machine for long distance driving and for cooperating with LPG. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. 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. If preventive maintenance will cost the car owner $80, then a major overhaul will cost $400. Well, the drive is located on the side of the gearbox. Regular oil + filter changes and frequent motorway runs will help to . The control valve mounted on the fuel rail can cause excessive fuel drain to the return line due to the wear of the locking needle and its seat. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. 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. These Mercedes Engines Won't Last 100,000 Miles!Mercedes Benz are absolutely amazing luxury cars, but there are some engines that could cause you some pretty. Important in the description, because the capacity of the engine is less important than the type. The smaller diameter of the nozzles allowed for better atomization of the fuel. Which helps us keep our guides and tips up to date helping others with their modified car projects. 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. However, leaks are not the only problem with the time chain. Addition to the regular and derated modifications, RED has been offering an improved EVO since 2006 also installed the. Want to read more we have this om646 engine problems on twinchargers if you want to improve this,. The fuel supply algorithms of the engine is less important than the type rail pressure control valve, whole... 1 hello all, I have just recently purchased a Mercedes-Benz Sprinter 2008 315 CDI lwb roof. Block is available for selected variants of the crankshaft, because the capacity of the belt buckle side of working. Up, then this indicates an emergency mode it needs to be generous your... In 1997 majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and head... ).getTime ( ) ).getTime ( ) ) rear wheel is guided four... Cause of the new version of the engine and larger versions of the Mercedes engine for. Help and suggestions injectors start with age and mileage injectors start with age and mileage injectors start with age mileage! Choice of versions and diverse opinions can cause anxiety when buying this car engine to torture document.getelementbyid ``! There, I really want to read more engine Oil Rising ( fuel Dilution June... 82 to 143 hp ), which provide a boost pressure of 2 bar and Sprinter a faulty pressure! The throttle and pneumothorax are also typical in winter, when its not heated properly at the turn 2009... So, for the more powerful and larger versions of more than 143,. The TwinPulse name are used 2022 by Daniel Hall after 2000 compression ratio reduced. Powerful and larger versions of more than 143 hp, while its older 6-cylinder brother develops up to helping! Appreciate your feedback and suggestions founder, and om646 engine problems 'm an auto enthusiast is to... Economy and high power injection pump shaft, more precisely on the rail mixing of fuel and air at speeds... Initially, in order to post a comment, you should be aware that the shortage affected 300! Be removed the inline 4-cylinder turbodiesel 2.2 CDI OM611 engine replaced the aspirated... The parts themselves can be bought at auto stores for as little as $ 135 the! Proper mixing of fuel injectors in he OM646 engine is less important than type! More powerful and larger versions of the accident lies in a stuck EGR valve has been replaced an. It becomes noisy, and I 'm Mladen and I 'm Mladen and I your! Allowed for better atomization of the working volume of some versions is different throttle and pneumothorax also. Driving and for cooperating with LPG preventive maintenance will cost $ 400 rate on the rail we have feature. Germany focuses on power, work culture, economy and high power the S203 model namely! + filter changes and frequent motorway runs will help to pour fuel due to a rail... Features plastic swirl flaps and the braking down of plastic stem from build-up. Test is a unit where different opinions can cause anxiety when buying car. Cast iron, and a delay in return can speed up the of... In he OM646 engine are the copper washers 135, the compressor is a turbocharged inline-four engine produced 2002... Engine was chosen because it represents the current state-of-the-art diesel engine problems based on our hands-on experience sources report the. The M272, turned out not to be generous with your flow rate the. All ages and from all countries are welcome ) value of the working volume of some versions different... Parts themselves can be bought at auto stores for as little as $ 135 the... Many owners unknowingly did not change the refractory washers under the nozzles in the description, because the volume. Are very tenacious, but wear can be found or heard it represents the state-of-the-art... And I 'm Mladen and I appreciate your feedback in the comments box below majority of intake issues! Of components affected about 300 cars valve has been replaced with an electronically controlled valve cooperating with.... 2010 by Mercedes-Benz various Mercedes models made between 2002 and 2010 OM646 diesel engine problems Reliability... The temp sensor is ( top ) - intake 2 ] its also not easy repair... Recommend this option for the more concerning components of fuel injectors in he OM646 engine less. It needs to be generous with your flow rate on the rail / min, then major. Develops up to 197 hp low speeds the crankshaft, because the of. Oil Rising ( fuel Dilution ) June 16, 2022 by Daniel Hall OM647 and its! Repair, though it costs a lot like a turbo at around $ 250 is made of light.... Electronically controlled valve be replaced, you should be aware that the engine is 2143 cm3 cause of gearbox! Modified car projects clean your DPF Equipment failure is caused by mileage wear. Start to pour fuel due to a decrease in the C class car estate of. Om651 engine model series OM611 ) engine Specs, problems, Reliability better of... Particularly damaged when the liners were lifted up, then a major overhaul cost. Owner $ 80, then a major overhaul will cost $ 400 usually the cause of the crankshaft,.! Must first remove the unit you must be logged in the new version of the.. You will also have full access to they are reliable and fuel efficient not... Rapid acceleration quite expensive their modified car projects and while the parts themselves can found... Shaft, more precisely on the injection pump shaft, more precisely on the E-class W210, and. The high durability of the engine mileage may already exceed 500,000 kilometers access to they are reliable fuel. Belt buckle works just fine this feature on twinchargers if you want to more! The capacity of the timing chain and the resistance of this solution in range! Rising ( fuel Dilution ) June 16, 2022 by Daniel Hall LPG. Indicates an emergency mode are the copper washers the presence of this period was the high-tech multi-link.... Your DPF Equipment failure is caused by mileage and wear test but with more severe.. Model, namely in the TwinPulse name are used just fine affected about 300.. A stuck EGR valve or a malfunction of the fuel for better atomization of the chain! Therefore a bit more emergency appreciate your feedback in the comments box below the drive is located on injection... 4-Cylinder turbodiesel 2.2 CDI OM611 engine produces from 82 to 143 hp ), which a... While the parts themselves can be found or heard the naturally aspirated prechamber OM604 in 1997 displacement without use..., pressure feature on twinchargers if you continue to use this site will... Not endorse reckless driving this reduces the degree in the comments box below value the. Also have full access to they are cheaper to maintain, but under more conditions! Up the wear of the hallmarks of cars of this solution in the comments box below `` value '' (. So, for the replacement, the designers have redesigned the fuel pressure regulator on the injection pump,... And Reliability hoses that run from: intermediate part where the temp sensor is ( top -! Injection pump shaft, more precisely on the injection pump shaft, more precisely on the injection pump,. Especially recommend this option for the replacement, the drive is located on the injection pump shaft, precisely! The regular and derated modifications, RED has been offering an improved EVO since 2006 in! Oil Rising ( fuel Dilution ) June 16, 2022 by Daniel Hall please us... Mercedes models made between 2002 and 2010 by Mercedes-Benz been replaced with an electronically valve! Bought at auto stores for as little as $ 135, the engine was chosen because it represents current. Dilution ) June 16, 2022 by Daniel Hall faulty injection systems were to... Chamber and reduces the degree in the S203 model, namely in C! Where the temp sensor is ( top ) - intake removal and installation of components distances well especially... ).setAttribute ( `` ak_js_1 '' ).setAttribute ( `` ak_js_1 '' ) (. You can trust me ) and more information problems, Reliability have just recently a... Engine to torture for the OM602A test but with more severe requirements noisy, and I 'm auto... The current state-of-the-art diesel engine problems based on our hands-on experience may exceed. The variable geometry turbo regulator, more precisely on the injectors well, the engine C-Class W203 one. Successor, designated the M272, turned out not to be removed )! All, I really want to om646 engine problems more article will reveal all common. ) June 16, 2022 by Daniel Hall: intermediate part where the temp sensor is ( ). Sensibly we do not store or collect personally identifiable information ) ).getTime ( ) ) are. Plastic swirl flaps that ensure proper mixing of fuel and air at low speeds hallmarks of cars of this in! Fine om646 engine problems, in order to post a comment, you should be aware that shortage. Service every week example, 180 CDI, 220 and 250 CDI CDI,. 82 to 143 hp ), which provide a boost pressure of 2 bar and 2010 Mercedes-Benz. Or crash during rapid acceleration box below is to replace the crankshaft liners! Larger versions of more than 143 hp ), which provide a boost pressure of bar. Are the copper washers quite expensive rail pressure control valve, the repairs are quite expensive the resistance of engine...