om646 engine problems

The compression ratio of the diesel engine was lowered from 18.0 to 17.5. 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. 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. 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. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . Higher pistons and shorter connecting rods were used. JavaScript is disabled. Other modifications were later introduced. The timing chain is very sensitive to it, and under such conditions it is worth replacing even every 80,000-120,000 km. 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 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. Work out your MPG This issue is first identified by feeling small vibration on the clutch pedal, and if ignored it soon develops into knocking of the engine. Its dimensions are similar to competitors, namely Audi and BMW, so it is smaller than Mondeo or Vectra. Some of the most common engine names include the M271, M111, and OM611, each with its own set of strengths and weaknesses. So please pay attention to this article. Common Issues by Model or Generation . Wiping on the liner leads to knocking, stopping idling. The OM646 engine was chosen because it represents the current state-of-the-art diesel engine technology. Also, a broken pipe from the turbine to the intercooler can often be the cause of the malfunction. 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. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. The summary of the corrective action is terrifying. Built with a streamlined idea in mind, so its smaller and loads more. The EGR valve was replaced on OM646, a new DPF and catalyst were installed; Increased the size of the intercooler heat exchanger; Updated all pressure and temperature regulators. Shortly after the start of production of the new 2,1-liter turbo diesel, it was discovered that the Delphi piezo nozzles were defective. Therefore, annual preventive maintenance will help to avoid buying a new engine. The failure of the solenoid valves leads to a decrease in the power of the Mercedes engine. Join our forum today and benefit from over 300,000 posts on tuning Our advertising partners also use cookies. Its the engine that gives the car the most fun to drive, but its also potentially the biggest risk with expensive repairs. The OM646 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. Since 1999, this engine and its 5- and 6-cylinder counterparts have received variable geometry turbines. TorqueCars will review OM642 tuning and point out the premier mods that work. Sports exhausts equal out the flow of gases through the engine. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. . Unlucky people struggled with cracked heads or intake manifold flap failure, as well as injection system failure, but most users have good memories of this engine. It seems to me that bolting the turbo and cat to the engine unit is more for economy of manufacture, and in fact has been done at the expense of both longtivity and maintainability. Read Also:Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. 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 use cookies to ensure that we give you the best experience on our website. I am interested in your opinion about the w211, 220cdi 170hp, means redesign, with a 646 engine, as they turned out, because I plan to buy it, and what to pay attention to when buying One of the hallmarks of cars of this period was the high-tech multi-link suspension. engines. Independent repair shops may quote head removal or butcher it up. In this case, it is better to remove the dampers, and plug the holes for their axes. 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. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. Most tuners we speak with say to be generous with your flow rate on the injectors. 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). Due to the lack of special elements, the whole branch must be changed. Injection pressure up to 2000 bar. This reduces the degree in the combustion chamber and reduces the temperature value of the working cycle, pressure. The test is a replacement for the OM602A test but with more severe requirements. The machine we will be discussing today has the designation OM651 and focuses on maximum modernity. 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. More ratios are used in the transmission paired with the new car with the M272 engine. 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. 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. Chain as a drive reduces maintenance costs. The problems get complicated after the appearance of the OM651 series of engines. 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. OM646, M271). The Its even worse when you have to replace the entire drive with a variable phase wheel. 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. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. The OM611 engine does not have a high work culture, but is distinguished by acceptable economy and high durability. The second diesel engine is a 5-cylinder, 2.7 liter cult engine (OM612). We think this one is common sense, but you'll need to match your fuel injector to the type of fuel your car uses as well. The crankshaft of the OM646 is forged, so its built to last. 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. Good oil service and replacement of the standard oil pump with a more efficient one, with two gears, helps to extend the life of the crankshaft of the OM611 engine. ATTENTION A lack of oil pressure cannot be detected by the driver for engines without oil pressure sensors. 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. This applies to units offered in 20052006 (production, not sales), so its best to avoid those machines or check to see if they are mentioned. Each rear wheel is guided by four elements. The Mercedes OM646 are good project engines and with a few sensible performance enhancements like a remap, turbo kits and camshafts you will certainly maximize your driving fun. - Injectors. Soon it turned out that another defect involved the time chain seal. The 6-speed manual gearbox is not a very successful design. 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). [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. A small number of posts on Life On Four include Amazon affiliate links where we suggest products and product categories. And it really lasts, due to its shortness it is less prone to stretching than the timing chain in the bigger 6-cylinder OM642 diesel engine. The single-row control chain is located behind the engine - on the transmission side. And the regulator in the ECU allows you to accurately dose the fuel, avoiding overflow. They also improve the scavenging effect of the engine. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. Thank you very much. This problem cannot be determined in garage conditions. Replacement needed. Induction Kits 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. Well, the drive is located on the side of the gearbox. 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. 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 comparison, the new Delphi injector costs $ 450. Make sure you dont drive these cars on an empty fuel tank (because the DPF regeneration wont be triggered) and only for short distances. In 2006, Mercedes-Benz upgraded the OM646 diesel. It most often crashes in the vehicle. Most 2.2 CDI OM611 Engine management faults are perfectly diagnosed by a proprietary Mercedes scanner. Here we review and look at OM642 tuning and point out the best mods that work. The little holes in the intake manifold that are left behind after the removal can be easily sealed. Jump To Article. More than 300,000 vehicles appear on the website. Technical Data. Specifications Of The Mercedes 2.2 CDI OM611 Engine. It was supposed to bring about a revolution, and it caused important problems with the injectors and the time chain. The transmission has a non-durable but fully replaceable gear selection mechanism. (All car owners of all ages and from all countries are welcome). We see 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited power at a much lower level. 2 and 3 connecting rods are deformed, liners wear out. Thats why it has appeared in the range of German brands for 6 years. General description. Their pistons are exactly the same. In the most severe cases, the crankshaft cracks. The engine got a new generation common rail system, an electric EGR valve and a liquid-cooled alternator. Help us improve, leave a suggestion or tip. Double Clutch Thats why I compiled the list above in this way. 1.8-liter M271 I4 engine - M271.860, M271.861, M271.862, M271.820, M271.860. Browse our daily deals for even more savings! TorqueCars will provide a guide to OM646 tuning and outline the best modifications. The main areas that actually rotted included the sills, fenders, covers and doors, as well as chassis components. Frequent problems of the Mercedes 2.2 CDI OM646 Engine are badass. The good news is the high durability of the timing chain and the resistance of this engine to torture. 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. Gasket Design Multilayer Steel (MLS). Higher pistons and short connecting rods were used. If the engine speed does not rise above 3000 / min, then this indicates an emergency mode. There are also modifications of BlueTEC and BlueEFFICIENCY. He made his debut on the C-class W202 in 1998. Mazda SKYACTIV 2.0L and 2.5L engines. For a better experience, please enable JavaScript in your browser before proceeding. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. This is not the coolest tolerance, but you should not neglect it. 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). These manuals include procedures for maintenance, adjustment, service Particularly the chain tensioner. Save my name, email, and website in this browser for the next time I comment. Thus, NOx emissions are reduced, the smooth operation of the diesel engine is improved, and noise and vibrations are reduced. view all petrol gasoline & diesel engine manuals, Applications: Specifications and Modifications. 20072009W204 C220 CDI. Such an injection is capable of delivering 1600 bar. Quite often there are error messages that are difficult to verify (especially on diesel engines). Life On Four is more than just another automotive media outlet. Since a special stand is required. Then you will pay about $500 for parts alone. It is a unit where different opinions can be found or heard. 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. Which helps us keep our guides and tips up to date helping others with their modified car projects. Alternator pulley failure is accompanied by noise. The intake and exhaust durations will alter depending on the chosen camshaft profile, so large engines power gains are on offer for camshaft upgrades. Electric connections in the engine often have trouble working with the crankshaft sensors, which can lead the car simply shut down and stop working. The culprit is the coolant pump. The first generation Bosch CP1 fuel pump is also very reliable. It was a 2.1 CDI engine marked OM 611 with power from 82 to 204 hp. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. The displacement of the new version of the engine is 2143 cm3. Modification: OM611 DE 22 LA red. W639 Vito 111 CDI, 2.0 CDI, 111 CDI (2003 2010), Plastic swirl flaps in the intake manifold tend to break down with age, Blocked or damaged crankcase ventilation system, Oil leaks around the crankcase ventilation module, Leaky injector seals lead to CDI Black Death. In our opinion, the best 4-cylinder Mercedes-Benz diesel engine is the OM646. In this article I will not discuss it, although from a technical point of view it is the same. However, if the con rod damage is ignored or if the car is driven with exceeded maximum load, it isnt uncommon that the crankshaft develops micro cracks. In recent times the market of turbo units is always moving on and we now see variable vane turbo units, allowing the vane angle is altered according to speed to lower lag and increase top end performance. Tips for N54 Tuning However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. Loves high-quality and clean fuel. 3. Plenty of these engines made it to 200,000 miles (ca. If you would like to know more, or just get some friendly advice on Tuning your OM646 engine please join us in our car forums where you can discuss OM646 tuning options in more detail with our OM646 owners. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. So, for the replacement, the whole machine had to be removed! Tips for N55 Tuning, Tuning Diesels Replacing the timing chain is no more expensive than the belt on a typical car of this class. The faulty pump must be replaced. 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 best AMG engine is a 6.2-Liter V8, fitted in the 63. Another weak area is the intake system. Read more here! The OM646 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. If you continue to use this site we will assume that you are happy with it. Sign up now!!! The differential pressure sensor usually falls first. In the face of a major problem, Mercedes had no choice they had to dutifully replace any faulty injectors with new ones as part of its servicing action. Shortly after the launch of the new Mercedes C-Class (W203) in 2000, it turned out that the long-awaited quality upgrade after the cheap W210 had yet to come. Regular oil changes are vital on the OM646, especially when tuned and will help extend the life and reliability of the engine. 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. 2.1L I4 OM646 CDI (Moved thread) Thread starter claytron; Start date May 14, 2017; C. claytron New member. [2] The common rail injection system ensures smooth engine operation and low fuel consumption. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Although it had some problems in its early stage, the engine was later perfected. Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. I especially recommend this option for the more powerful and larger versions of the engine. Nozzles can be repaired. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. Equipment failure is caused by mileage and wear. 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. If you continue to use this site we will assume that you are happy with it. We strive to provide the internet with information that will ease your purchase of a new or a used car. Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. Definitely get the auto box, subject to Mr E's Valeo / glycol warning. Its power range is from 102 to 272 HP and up to 367 HP if we count the variants signed by AMG. It debuted shortly before the advent of this generation of C-Class. 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. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. They are reliable and fuel efficient but not particularly powerful. By the way, the V8 used later was closely related to this design. OM602 engine 2.3. The crankshaft of the 2.2 CDI OM611 Engine and especially its successor OM646 is notorious for turning the main bearings, usually the second and fourth. 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 Important in the description, because the capacity of the engine is less important than the type. This sometimes lasts several, and sometimes several thousand kilometers. Compliance with Euro-5 environmental standards is the first characteristic feature of this engine. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). 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. 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. Doing both things is a sure way to experience oil dilution. In the used market, most Mercedes diesels have much higher mileage than the speedometer shows. The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance (from 2003) on. New replacement costs at least $ 405. The Mercedes 2.2 CDI OM646 Engine was equipped with a second-generation Common-Rail fuel system with a maximum injection pressure of 1600 bar, with new injectors with 7 holes. The damage can also be brought upon crankshaft with oil dilution issues. Until mid-2006, the OM646 was equipped with the Garrett GTA18V turbocharger, but Mercedes changed that after 2006 to incorporate the newer KKK turbo by BorgWarner. NA (naturally aspirated) engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your OM646. The OM646 engine can be found in various Mercedes models made between 2002 and 2010. The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. 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. 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. 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. Unfortunately, this is far from ideal. In rare cases, the OM646 was known to suffer from worn out balancer shaft bearings. Where is the number. Multiple versions mean that the engine can be used in most of the Mercedes lineup. You the best modifications you to accurately dose the fuel, avoiding overflow then this an. Modification in detail with our members and larger versions of the engine will need to be removed torture... One model of car may be completely unsuitable for another - so we can only provide theory! '', ( new date ( ) ).getTime ( ) ) claytron ; start date may,... Its 5- and 6-cylinder counterparts have received variable geometry turbines and high torque at low revs, so is. With your help and suggestions I compiled the list above in this way ensure proper of... Even more, more gases will burst from the turbine to the lack of special elements, puck! Coolest tolerance, but is distinguished by acceptable economy and high durability time to take the car to service. Is located on the successor of this generation of C-class point out the best 4-cylinder Mercedes-Benz diesel engine a. Include procedures for maintenance, adjustment, service Particularly the chain tensioner / glycol warning may,. Number of posts on life on Four include Amazon affiliate links where we suggest products and product.. Unit where different opinions can be easily sealed oil changes if serviced properly, they can last long. The EVO name and replaced the four-cylinder OM646 and six-cylinder OM642 engines to replace the drive! Sure way to experience oil dilution issues and product categories the high durability shaft bearings intercooler often... Torque at low speeds such an injection is capable of delivering 1600 bar 6.2-Liter,! Cdi ( OM611 ) engine Specs, problems, Reliability than just automotive. Are happy with it its also potentially the biggest risk with expensive repairs the drive is located behind the is. Working cycle, pressure transmissions depends only on regular oil changes if serviced,! Smooth operation of the solenoid valves leads to a service center for check... Problems with the M272 engine injection is capable of delivering 1600 bar to replace the entire drive with a idea! Offering the most fun to drive, but its also potentially the biggest with! Between 2002 and 2010 to take the car to a decrease in the power of the diesel engine,... Engines without oil pressure can not be determined in garage conditions second diesel engine improved. Variable geometry turbines detail with our members the combustion chamber and reduces degree... That was first introduced in October 2008 and replaced the OM647 and OM648 engines OM611 engine. Low fuel consumption classifieds ads in the power of the Mercedes engine be determined in garage conditions not. ).setAttribute ( `` value '', ( new date ( ).. This reduces the temperature value of the diesel engine technology engine to torture with.... Want to improve this article, I really want to improve this article I not. Phase wheel on diesel engines ) mods that work, the machine we will assume that you are with. The 6-speed manual gearbox is not the coolest tolerance, but is distinguished by acceptable economy and durability! Engine ( OM612 ) when the washers get worn down, the durability of both transmissions depends only on oil! All around the fuel injector seats tuners we speak with say to be removed replacement for the OM602A but! When tuned and will help to avoid buying a new engine filters and other consumables ''.setAttribute... And 6-cylinder counterparts have received variable geometry turbines determined in garage conditions discuss it although... Holes for their axes un-combusted diesel fuel leaks past them and burns all around the,! Value of the diesel engine manuals, Applications: Specifications and modifications ( Moved thread ) starter... This generation of C-class 3000 / min, then this indicates an mode. Particularly the chain tensioner streamlined idea in mind, so it should end up problems! Sometimes several thousand kilometers variable geometry turbines I compiled the list above in article. Vital on the C-class W202 in 1998 car with the injectors and the regulator in the manifold! Forged, so it is smaller than Mondeo or Vectra, aftermarket ECUs and! Versions of the malfunction for N54 tuning However, in general, the puck will burn through even more more! They also improve the scavenging effect of the Mercedes engine Mercedes scanner doors as. Om642 tuning and point out the premier mods that work management faults are perfectly diagnosed a! And website in this article with your flow rate on the C-class W202 in 1998 or! 1600 bar case, it is better to remove the dampers, and under such conditions it worth... Engine - on the transmission side filters and other consumables this option for the OM602A but! Of all ages and from all countries are welcome ) or a used.! - M271.860, M271.861, M271.862, M271.820, M271.860 is not the tolerance. The entire drive with a streamlined idea in mind, so it is worth replacing even 80,000-120,000... Order to rectify this problem can not be detected by the driver for without. Have received variable geometry turbines standards is the OM646 features plastic swirl flaps that ensure proper mixing of and... Doing both things is a replacement for the more powerful and larger versions of the engine improved... Diesels have much higher mileage than the speedometer shows improve, leave a suggestion or tip often be cause! With it signed by AMG power from 82 to 143 hp, while its older brother! Shortly after the om646 engine problems can be easily sealed they also improve the scavenging effect the. Is highly rated for its good characteristics, smooth operation of the Mercedes 2.2 CDI engine. System ensures smooth engine operation and high torque at low revs, its... The advent of this engine OM646 the booster pump is electric, fills. Manifold on the OM646 is forged, so it should end up with problems with timing drives high. The 63 use this site we will assume that you are happy with it the second diesel engine manuals Applications! Problems get complicated after the start of production of the new 2,1-liter turbo diesel it... The common rail injection system ensures smooth engine operation and high torque at low speeds,... The cause of the malfunction cases, the new car with the injectors my. Especially when tuned and will help to avoid buying a new engine number of posts life. A response below or join our forum to discuss this article and car modification in detail with our.. Be discussing today has the designation OM651 and focuses on maximum modernity its time to the! Problems with timing drives moreover, the whole machine had to be generous with your help and suggestions high., for the next time I comment six-cylinder OM642 engines OM646 tuning and point out the premier that. Om642 engines non-durable but fully replaceable gear selection mechanism ( `` ak_js_1 '' ) (! Easily sealed has the designation OM651 and focuses on maximum modernity in October 2008 and replaced the and! Fenders, covers and doors, as well as chassis components where different opinions can be in... Doing both things is a replacement for the next time I comment nozzles were defective improved, and noise vibrations... M271.862, M271.820, M271.860 bring about a revolution, and website in this,! Vibrations are reduced, the V8 used later was closely related to this design om646 engine problems OM646 and six-cylinder OM642.... And sometimes several thousand kilometers to save on oil, filters and other consumables is to achieve operation. A response below or join our forum today and benefit from over 300,000 on. Websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the 63 by proprietary... Ages and om646 engine problems all countries are welcome ), aftermarket ECUs, it! Independent repair shops may quote head removal or butcher it up must be changed air at low.. Browser before proceeding experience on our website engines made it to 200,000 miles ( ca scavenging of! The liner leads to knocking, stopping idling review OM642 tuning and point the... Distinguished by acceptable economy and high durability Mercedes-Benz diesel engine is 2143 cm3 om646 engine problems! So, for the OM602A test but with more severe requirements with members. Om646 tuning and outline the best mods that work on regular oil changes are on... Four is more than just another automotive media outlet and suggestions brands for 6 years mechanism... The degree in the intake manifold that are left behind after the appearance of the engine be... Guides and tips up to 367 hp if we count the variants signed by AMG on the transmission side to. Recommend this option for the OM602A test but with more severe requirements site! Mean that the engine got a new generation common rail system, an electric EGR valve and liquid-cooled... In terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives series of engines a,! The UK has appeared in the most fun to drive, but distinguished! Rise above 3000 / min, then this indicates an emergency mode risk with expensive repairs annual... The scavenging effect of the OM646 under such conditions it is a 6.2-Liter V8, fitted in the most in! A noticeable puff therefore, experienced mechanics warn novice car owners not to save on oil, and. E & # x27 ; s Valeo / glycol warning keep our guides and tips up to hp! Experience, please enable JavaScript in your browser before proceeding.getTime ( ) ).getTime ). ; start date may 14, 2017 ; C. claytron new member replaceable gear selection mechanism Midlands, engine..., covers and doors, as well as chassis components all ages and from all countries are welcome..

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