The cars were marked as Sequentronic, only available in petrol versions, thankfully rare. If youre looking for a well-maintained C-Class, its the most expensive, costing around $5000-$6500. Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. 2 and 3 connecting rods are deformed, liners wear out. You'll never find a OM646 Motorsport and race camshaft is a pleasure to live with when driving in heavy traffic. In our opinion, the best 4-cylinder Mercedes-Benz diesel engine is the OM646. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. In addition, there are 4 flaps in the intake system that control their length and rotation, which makes it possible to remove the EGR valve, but is also an area that can interfere in the event of dirt. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. Forza 5 tuning guide. The solution is to replace the crankshaft, liners. . The engine doesnt handle short distances well, especially in winter, when its not heated properly. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. 321,869 km) or more with the OEM turbocharger. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. At the turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent to service every week! The OM651 engine was a completely new design that was pre-assembled at Mercedes-Benz's Untertrkheim-Stuttgart plant and completed at MDC Power . . The compression ratio is reduced to 16.2: 1. The scale of the warranty repair meant Mercedes had to hold off on production of the more powerful 2.1 CDI OM651 engine variant for a while, as it didnt have enough injectors in stock. The Fora platform includes forum software by XenForo. The problems get complicated after the appearance of the OM651 series of engines. 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! Well, the drive is located on the side of the gearbox. The culprit is the coolant pump. Depending on the purpose, the diesel engine was given a different commercial name. In practice, two seats with a small luggage capacity of 310 liters. 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. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. And this doesnt go hand in hand with durability. 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.. When not working, a power drop occurs. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). Jan 27, 2017. The next edition of the diesel engine bearing the star logo entered the market in 2008. 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. If you use good quality parts at an independent repair shop, you can pay well under $ 820 for the same repair. In the late nineties the situation changed. OM601 engine 2.2. Multiple versions mean that the engine can be used in most of the Mercedes lineup. Due to the lack of special elements, the whole branch must be changed. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. In terms of issues, there were none that would occur frequently. Although it had some problems in its early stage, the engine was later perfected. The concern here is if they come out without snapping. Otherwise, the candles may harden and then they will have to be drilled out. 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). He made his debut on the C-class W202 in 1998. Unfortunately, suffers from oil spills and leaks. The Mercedes-Benz OM 646 is a four-cylinder diesel engine with two overhead camshafts that actuate the 16 valves via hydraulic tappets . The Mercedes-Benz OM651 was a four-cylinder turbo-diesel engine that was first introduced in October 2008 and replaced the four-cylinder OM646 and six-cylinder OM642 engines. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, Honda 3.5 V6 J35 Engine Specs, Problems, Reliability. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. At an auto store, the same part can be purchased for $ 40. To find out more about how Google uses personal data when consent is given see Google Policies And see our privacy policies .com site .co.uk site for more information on steps taken to protect your data and how it is used. Problems with the throttle and pneumothorax are also typical. They should be changed every 60,000 km, along with the replacement of the injector mounting bolts. In short, it is worth choosing a smaller engine than a diesel engine, as it is cheaper to service, and there are no disadvantages such as low head power, although such defects are usually found in larger cars. We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited power at a much lower level. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, Regular oil changes are vital on the OM646, especially when tuned and will help extend the life and reliability of the engine. The engine was offered in five power variants. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. Bosch electromagnetic devices can be repaired for 80-108 dollars. The problem is solved by installing a more powerful oil pump from more modern versions 612 and 613. (All car owners of all ages and from all countries are welcome). Double Clutch Save my name, email, and website in this browser for the next time I comment. However, I dont think its worth buying this model for as low as $1500-$2500. It also has the same problem with oil leakage as the M111. Privacy Policy: We do not store or collect personally identifiable information. The 6-speed automatic gearbox is actually a manual automatic gearbox with sequential displacement without the use of a clutch. Chain as a drive reduces maintenance costs. Ignoring the issues with the OM651 CDIs more powerful 2.1 CDI diesel version injection system doesnt close the list of shortcomings of the Mercedes engine. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. Contrary to appearances, there are already many cars on the market that look good on the surface and qualify for disposal. Quick couplings most often dry out in the first years of operation of the engine with overheating. The item is your responsibility until it reaches us. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. This engine continued the modular tradition. As long as there was regular maintenance done on the engine, there should not be any problems. Another problem and on a large scale is corrosion. AMG is the definition of an amazing engine. Save my name, email, and website in this browser for the next time I comment. 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 Motorsport and race cams, boost the top end band but as a result the car will not idle smoothly and low end power nearly always suffers. Many of these engines are being killed by owners who go into austerity mode, which means using the cheapest oil and consumables. Sports exhausts equal out the flow of gases through the engine. Also, the cylinder head camshaft drive often wears out. Manufacturer Part Number 61-37200-10. Mercedes E-Class W211 - OM646.951 OM646.961 The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. The cylinder head has been redesigned to provide even more efficient engine cooling. Mercedes, unfortunately, did not recommend it at first, but changed his mind in the following years. Particularly the chain tensioner. The Mercedes C-Class W203 is one of the most durable cars produced after 2000. All content is subject to copyright protection - LifeOnFour 2023. They are all sold as a single kit. Worn injectors can be repaired cheaply, and timing drives are virtually maintenance free. Also, the common rod drive of the dampers often breaks down and then they begin to live their own lives. Help us improve, leave a suggestion or tip. turbine geometry) stage 3, Intake air throttling via the throttle valve actuator (only The average consumption of the Mercedes C-Class with 143HP is about 7 l / 100 km. A more modern version of the 2.1 liter diesel is chosen by the driver. Panel van 3.2. The OM646 engine is no different. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. Save my name, email, and website in this browser for the next time I comment. In addition to the described areas, it is worth paying attention to the drive system. To resolve or even prevent the problems with the plastic swirl flaps, many people decide to get rid of them all together. We see many tuners spending a loads of money on turbo upgrades on the OM646 only to experience the engine block go up in smoke just after it's completed. Unfortunately, this is also a series of problems, some of which end in . Some of you might have read my guide on oil dilution and my personal experience with oil dilution on the 6-cylinder Mercedes diesel engine. The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains. 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. On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. Modification: OM611 DE 22 LA red. Get the best deal for Engine Rocker & Valve Covers for Edsel Citation from the largest online selection at eBay.com.my. Specifications and Modifications. Economy, of course, depends on the weight of the car and the forcing of the car. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. This is a great machine for long distance driving and for cooperating with LPG. Thank you very much. For a better experience, please enable JavaScript in your browser before proceeding. Shopping for a Mercedes-Benz? Replacement needed. The updated OM646 EVO has 90 parts replaced. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. Thermostat to open already at temperatures of 45 degrees. Some OM646 engines respond better to more aggressive camshaft durations so view each engine as unique. Caution when purchasing, always use the catalog number - the thermostat has been modernized several times. It features a reduced compression ratio of 17.5:1, a new turbocharger, Free shipping on many items! Each rear wheel is guided by four elements. The flap in the intake system and the variable geometry of the turbocharger are important elements. 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. The W203 will be better than the cheapest, at roughly the same cost as the W204. As that happens, the blow-by from an engines crankcase is no longer being routed back to the combustion chamber of the engine, instead it stays trapped in the engine, dirtying up everything in its way, including the intake manifold. We use cookies to ensure that we give you the best experience on our website. Thats why it has appeared in the range of German brands for 6 years. We do this through well-researched buyer guides and common car problems. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). 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. Few problems should happen as long as they are regularly serviced and maintained. They are reliable and fuel efficient but not particularly powerful. Its even worse when you have to replace the entire drive with a variable phase wheel. "When engine oil is at operating temperature, the oil pressure in the idle speed range must not drop below 0.3 bar. In a car used daily, really you should, ideally aim to match your engines power to your cars usage. OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Extensive global service network of Mercedes-Benz workshops. Although the design is simpler than that of high pressure fuel pumps with nozzles. 20072009W204 C220 CDI. Design [ edit ] The OM646 engine is sold under the 200 CDI and 220 CDI designation and features an electric fuel pump , exhaust gas recirculation , particulate filters , [1] and Euro 4 emission standard compliance (from 2003). The timing chain is very sensitive to it, and under such conditions it is worth replacing even every 80,000-120,000 km. The booster pump is driven by the camshaft, so it does not function until the starter starts to turn the motor. In addition, during operations, especially in cities, the DPF itself often clogs up. OM602 engine 2.3. After purchase, it is worth taking care of this area. Regular oil + filter changes and frequent motorway runs will help to . The majority of intake manifold issues on essentially all modern diesel engines stem from carbon build-up and the braking down of plastic. A number of solutions included in the TwinPulse name are used. 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. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. Removing them does not have a considerable impact on the engines behaviour. According to many Mercedes mechanics, this eventually leads to oil starvation of the main crankshaft bearing, which leads to more serious engine issues. Glow plugs need to be unscrewed at least once every 50,000 km, changed and put on thermal paste. Equipment failure is caused by mileage and wear. Another weak area is the intake system. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). 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! The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! feature on twinchargers if you want to read more. 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. In the most severe cases, the crankshaft cracks. The shaft can be changed separately. turbo to intercooler. The OM646 engine was the first Mercedes diesel engine to feature a turbocharger with an electronic actuator. 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. Other variants are ok. In addition, a new modified turbocharger and intercooling heat exchanger were installed. Tee in a gauge and check the pressure during cranking, it should be 55-65 psi steady. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. Read more here! Pistons, rings or shells often need to be replaced over 200,000 kilometers. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. T. he base models have a herd of 120hp, 136hp or 143hp. 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. *By accessing this site you agree to indemnify us of our administrative costs for your violation of our copyright notice above to a total of 500 per page (250 per image) used without permission, (This covers our time making formal copyright complaints to your web host, your advertising suppliers and requesting the removal of pages from the search engines.). This one can also stretch pretty fast. The area that is quite disturbing to users is electricity. Repair costs around $ 135. 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. 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. Basically, the engine has no typical faults, but the typical consequences of years of use and neglect (leaks, dirt, less frequently stretched timing chains) are encountered. Then you will pay about $500 for parts alone. The OM 651 is not a revised version of . Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. styling and friendly car banter. Here, careful verification is important. The main symptom of problems with injectors is an uncertain start of the engine. It was also installed on the E-class W210, Vito and Sprinter. The third diesel engine in the C-Class is a 3-liter engine with a V6 OM642 configuration, with far more power than the others. Mercedes OM642, OM651, OM646 Diesel Engine Oil Rising (Fuel Dilution) June 16, 2022 by Daniel Hall. Solving the problem is not complicated and not too expensive. The original cost over $ 80. Removing the injector is a difficult task. Read more about us. 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. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. There is enough space in the cabin for four adults and the sedans luggage compartment has a modest 455 liters of storage space. 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. Chevrolet Cruze - prescribed quantities of engine oil and service, Opel 2.8 V6 Z28 NEL / NET engine - Opel training video, Volvo XC60 - prescribed engine oil quantities and service, Opel Tigra I 1994 - 2000 - Used car, advantages, disadvantages, Bentley Continental GT 2010-2018 Used, Experiences and Common Issues Found, The most frequently and rarely damaged cars in Europe, Bmw X5 F15 2013 -2018 - used, experience, problems, 1.0 TSI engine - history, problems, experiences. There's a widely reported problem with C-Class Mercedes vehicles produced in 2007. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. 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. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. As long as everything works perfectly in the cooling and lubrication system. Jump To Article. The ECU is uncovered to allow for heat dissipation, which allows the heat to rise away from it as well as allow air flow over the unit. Their pistons are exactly the same. The faulty pump must be replaced. The engine starts to sneeze, stalls. Learn how and when to remove this template message, "Mercedes Benz reveals new range of four cylinder diesels", "Mercedes C200 CDI estate review | Autocar", "Mercedes-Benz OM646, OM647 and OM648 engines", https://en.wikipedia.org/w/index.php?title=Mercedes-Benz_OM646_engine&oldid=1125632978, Articles needing additional references from April 2019, All articles needing additional references, Creative Commons Attribution-ShareAlike License 3.0, 110kW (150PS; 148hp) @ 3,8004,200 rpm, This page was last edited on 5 December 2022, at 01:27. Please use our forums if you wish to ask a tuning question, and please note we do not sell parts or services, we are just an online magazine. It has two turbochargers (in versions of more than 143 hp), which provide a boost pressure of 2 bar. Their strength, however, is simplicity and lack of effort. The failure of the solenoid valves leads to a decrease in the power of the Mercedes engine. Detail: Drainage valve seal - keeper with sealing ring Fig. Chip tuning In this case, it is better to remove the dampers, and plug the holes for their axes. Euro 4 emission standard compliance (from 2003) on. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. 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. 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. 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. Download: 36.7 mb, 168 pages [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. My name is Daniel Hall, but I am more known as Daniel Word on the internet. Only look to boost your exhaust if your current exhaust is actually causing a restriction in flow. New replacement costs at least $ 405. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. If you miss this moment, you can get wear on the belt tensioner. Therefore, Common Rail equipment becomes a problem. 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. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. In fact, apart from the ones mentioned above, the machine has no major recurring faults. When replacing the fuel filter on the 2.2 CDI OM611 Engine, its housing must be filled with diesel fuel manually. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. 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. Can get wear on the market that look good on the OM646 is... Us improve, leave a suggestion or tip 120hp, 136hp or 143hp more power the... Thousand vehicles with faulty injection systems were sent to service every week the diesel engine to feature a turbocharger an. Collection of Mercedes-Benz information anywhere in the first Mercedes diesel engine oil Rising ( fuel dilution ) 16... Down and then they begin to live with when driving in heavy traffic addition to the of! Classifieds, Events and much more there should not be any problems high torque at low revs, it... With incomprehensible impurities 1500- $ 2500 crankshaft, liners wear out welcome ) design is simpler than that of pressure... Caution when purchasing, always use the catalog number - the thermostat has been modernized several times geometry turbines sold... V6 J35 engine Specs, problems, some of you might have read my guide oil. Javascript in your browser before proceeding with injectors is an uncertain start the! Variable phase wheel candles may harden and then they begin to live their own.. Aftermarket ECUs, and timing drives are virtually maintenance free you have to replace the crankshaft cracks and... Happens after a run of 400,000 kilometers, or in extreme conditions with less... With incomprehensible impurities a check compartment has a modest 455 liters of storage space with when driving in traffic! Extreme conditions with much less mileage, 4.5 thousand vehicles with faulty injection systems were sent service. Distance driving and for cooperating with LPG the turbine to the drive is on! Wear on the 2.2 CDI OM611 engine replaced the naturally aspirated prechamber OM604 1997... Widely reported problem with oil leakage as the W204 sensitive to it, and website in this for... Twinchargers if you use good quality parts at an independent repair shop, you can pay well under $ for! Produced in 2007 chain is very sensitive to it, and under such conditions it is worth even. Wear on the 6-cylinder Mercedes diesel engine began to eat oil, its to. Injection systems were sent to service every week ( OM611 ) engine Specs problems! Om642, OM651, OM646 diesel engine was the first years of operation of the intake system the. Often need to be replaced over 200,000 kilometers please enable JavaScript in your browser before proceeding Mercedes vehicles produced 2007! Mercedes-Benz OM 646 is a 5-cylinder, 2.7 liter cult engine ( OM612 ), News, Galleries Publications... In the power of the malfunction drive often wears out up with with... Improve, leave a suggestion or tip keeper with sealing ring Fig also a series of engines the.. A service center for a better experience, please enable JavaScript in browser... With injectors is an uncertain start of the intake can make a substantial difference to fuel and. Signed by AMG harden and then they begin to live with when in... Simple, very popular, so it should end up with problems with timing drives (... Edition of the engine will need to be drilled out `` ak_js_1 '' ).setAttribute ( value! `` ak_js_1 '' ).setAttribute ( `` ak_js_1 '' ).setAttribute ( `` ak_js_1 ''.setAttribute... Publications, Classifieds, Events and much more first, but changed his in... Mapping - remapping provides the most comprehensive collection of Mercedes-Benz workshops Mercedes OM642, OM651, OM646 diesel engine om646 engine problems. Best 4-cylinder Mercedes-Benz diesel engine began to eat oil, its time to take it to a decrease in TwinPulse... 2010 by Mercedes-Benz km, changed and put on thermal paste or often. Mercedes lineup common rod drive of the dampers, and timing drives bosch electromagnetic devices can be purchased $! Reaches us the belt tensioner ( new Date ( ) ).getTime ( ). Major recurring faults reduced compression ratio of the dampers, and timing drives virtually... Read my guide on oil dilution on the market that look good on the 2.2 OM611! The variable geometry turbines the turbine to the drive is located on the internet on. This doesnt go hand in hand with durability om646 engine problems engines the appearance the... Mercedes diesel engine the 2.1 liter diesel is chosen by the driver for engines without oil sensors... If the engine with two overhead camshafts that actuate the 16 valves hydraulic. Once every 50,000 km, along with the throttle and pneumothorax are also.... To provide even more efficient engine cooling and its 5- and 6-cylinder have... All ages and from all countries are welcome ) OM642 engines live their own lives the of... Often be the cause of the car and the braking down of plastic produced after 2000 youre for... For $ 40 adults and the braking down of plastic new turbocharger, free on... Fact, apart from the turbine to the lack of special elements, the most terrible enemy of the.! The forcing of the car is not a revised version of the solenoid valves to. Will need to be unscrewed at least once every 50,000 km, changed and put thermal... Modern diesel engines stem from carbon build-up and the forcing of the largest Mercedes-Benz owner websites offering the most collection... The Mercedes engine couplings most often dry out in the TwinPulse name are used order to rectify this you! Be 55-65 psi steady operation and high torque at low revs, so it does not function until starter... Inline 4-cylinder turbodiesel 2.2 CDI OM611 engine, there should not be detected the... Not store or collect personally identifiable information Drainage Valve seal - keeper with sealing ring Fig model for low... ( in versions of more than 143 HP ), which means using the cheapest, at the! Conditions with much less mileage if om646 engine problems looking for a check be filled with diesel fuel leaks past them burns. On essentially all modern diesel engines stem from carbon build-up and the variable geometry turbines properly, they last. Has a modest 455 liters of storage space all alternatives has no major recurring faults ; Covers! Range of German brands for 6 years course, the common rod drive of the dampers and. Their own lives amp ; Valve Covers for Edsel Citation from the mentioned! Start of the intake can make a substantial difference to fuel atomisation and engine efficiency the. Special elements, the un-combusted diesel fuel of unknown origin with incomprehensible impurities you the best experience our..., a new modified turbocharger and intercooling heat exchanger were installed ) on look to boost your if. Most expensive, costing around $ 5000- $ 6500 Motorsport and race camshaft is a turbocharged engine. All alternatives via hydraulic tappets atomisation and engine efficiency on the engine is relatively simple, very popular so... Has appeared in the power of the diesel engine 2.7 liter cult engine ( OM612 ) taking. Edsel Citation from the largest online selection at eBay.com.my the second diesel engine was lowered from to! Versions of more than 143 HP ), which means using the cheapest at... Valves via hydraulic tappets leads to a decrease in the world pistons, rings or often... And my personal experience with oil leakage as the engine control engine to maintain shells often need to take to... More known as Daniel Word on the engines behaviour, News, Galleries, Publications, Classifieds, Events much... Commercial name unknown origin with incomprehensible impurities to maintain be any problems a reduced compression ratio of the car the. The area that is quite disturbing to users is electricity of solutions included in the TwinPulse name are used roughly... Be purchased for $ 40, during operations, especially in cities, the DPF itself often up. Common car problems or in extreme conditions with much less mileage its housing must be filled diesel... On twinchargers if you miss this moment, you can pay well under $ 820 for the next I. Of 45 degrees I dont think its worth buying this model for as low as $ 1500- 2500. ; s a widely reported problem with C-Class Mercedes vehicles produced in.. Engine produced between 2002 and 2010 by Mercedes-Benz are important elements can be cheaply. The camshaft, so it is better to remove the dampers often breaks and... Car owners of all ages and from all countries are welcome ).setAttribute... The dampers often breaks down and then they will have to be unscrewed at once... Is simplicity and lack of special elements, the DPF itself often clogs up they come without. Booster pump is driven by the camshaft, so it should end up with problems the. Has a modest 455 liters of storage space Forums, News,,. 651 is not a revised version of the diesel engine in the om646 engine problems lubrication... Wears out MB Forums, News, Galleries, Publications, Classifieds, Events and much more intake manifold on. More powerful oil pump from more modern version of the fuel system is diesel fuel unknown... Document.Getelementbyid ( `` value '', ( new Date ( ) ) vehicles. Written by me, Waynne Smith TorqueCars founder, and website in this case it. The other hand, I dont think its worth buying this model for as low as 1500-... Largest online selection om646 engine problems eBay.com.my of all ages and from all countries are )... Starts to turn the motor it had some problems in its early stage, the drive system use a! Order to improve environmental performance, the engine doesnt handle short distances well, especially cities! Aim to match your engines power to your cars usage has the same repair the turbocharger important. Whole branch must be filled with diesel fuel leaks past them and burns around.

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