Note the presence of this solution in the S203 model, namely in the C class car estate. 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. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. Thank you very much. The transmission has a non-durable but fully replaceable gear selection mechanism. Few problems should happen as long as they are regularly serviced and maintained. Customize a car Please help us improve these tips by sending us your feedback in the comments box below. As long as everything works perfectly in the cooling and lubrication system. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! Gasket Design Multilayer Steel (MLS). Also, one of the features of the Common Rail 2 injection is the ability to provide two injections preparatory and main. In the intake manifold of the 2.2 CDI OM611 Engine there are flaps for the filling channels. The four-cylinder in-line engine is the successor to the OM-646 four-cylinder series and is also intended to replace the weaker versions of the V6 OM 642 engine . In summary, all gasoline engines can be recommended. Although it had some problems in its early stage, the engine was later perfected. Other variants are ok. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. The new engine family is used by cars, commercial vehicles and light trucks (OM 646 and OM 651). For comparison, the injection pressure OM 611 - 1350 bar. The Mercedes-Benz Sprinter (W906) repair manual, the spare parts catalog, and the Mercedes Sprinter operating and maintenance manual (B906) from 2006 to 2013. release.The models were equipped with diesel engines OM651.955 / 956/957 (2,2 l Common Rail), OM646.984 / 985/986/989/990 (2.2 L Common Rail), OM642.896 / 992 (3.0 L Common Rail). Mapping - remapping provides the most advantage in terms of cost savings, aftermarket ECUs, and piggyback ECUs are all alternatives. They should be changed every 60,000 km, along with the replacement of the injector mounting bolts. Where is the number. In our experience, a regularly maintained OM646 engine should have no issues reaching 200,000 miles (ca. Rapid delivery as usually in stock. Normal current draw is 6-9 amps. Due to the lack of special elements, the whole branch must be changed. 1.8-liter M271 I4 engine - M271.860, M271.861, M271.862, M271.820, M271.860. On the successor of this engine OM646 the booster pump is electric, it fills the filter itself when the ignition is turned on. The engine block, as before, is made of . The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. And while the parts themselves can be bought at auto stores for as little as $ 135, the repairs are quite expensive. OM642 oil pressure check. Doing both things is a sure way to experience oil dilution. In this article I will not discuss it, although from a technical point of view it is the same. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, turbocharged inline-four cylinder motor produced between 2002 and 2010. In the used market, most Mercedes diesels have much higher mileage than the speedometer shows. 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. 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. If you continue to use this site we will assume that you are happy with it. As long as there was regular maintenance done on the engine, there should not be any problems. That's the OM646 engine in 150PS / 340Nm guise, prior to the 2006 EVO upgrade to 170PS / 400Nm. 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! A known problem with the 2.1 CDI OM651 diesel engine is a leak in the cooling system. 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. The OM646 engine is no different. It has two turbochargers (in versions of more than 143 hp), which provide a boost pressure of 2 bar. 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. Good for you, but don't buy anything untill watching this video. Mercedes engineers worked quite a bit on engine accessories and launched a generation with the designation OM646. In 2006, Mercedes-Benz upgraded the OM646 diesel. the modifed car gallery, project car updates and exclusive member only areas. 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. 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. So please pay attention to this article. Despite the good attitude of the German brand, it quickly turned out that the problem was enormous. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. Tuning the Mercedes OM646 and best OM646 performance parts. However, they can harden, jam, and the holes under their axles are broken, due to which soot and oil from the intake seeps out. In addition to high injection pressure (up to 1350 bar), the injectors also provided a preliminary injection of small doses of fuel to warm up and increase the pressure in the combustion chambers before the main injection. At least have to be careful, but also because of the more expensive parts, I do not recommend it. 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. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. Advantages Availability. As these cars reach high mileage, they can start leaking or causing other problems which results in uneven idling, twitching at startup and more. They are all sold as a single kit. 2 and 3 connecting rods are deformed, liners wear out. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. 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. Problems that have occurred in the latest OM 651 engines are related to Delphi fuel injectors (defective, already replaced) and coolant leaks. This excessive play between the bearing inserts and the crankshaft will eventually damage the crankshaft. 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. It was a 2.1 CDI engine marked OM 611 with power from 82 to 204 hp. Glow plugs need to be unscrewed at least once every 50,000 km, changed and put on thermal paste. Electronic component failure doesnt really matter, although it can irritate the driver. 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. Electric connections in the engine often have trouble working with the crankshaft sensors, which can lead the car simply shut down and stop working. Minibus 3.3. Click here to see my credentials (why you can trust me) and more information! We have a policy of actively enforcing our copyright*. 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. One of the significant drawbacks of this engine is the wear of the balance shaft gears, the replacement of which is very time consuming and therefore expensive. The inline 4-cylinder turbodiesel 2.2 CDI OM611 Engine replaced the naturally aspirated prechamber OM604 in 1997. 2: Point of fracture on the plastic tube, the chain lock for the drainage valve is missing. They also improve the scavenging effect of the engine. AMG is the definition of an amazing engine. We love hearing about our website visitors projects, especially the mods done and which work best for you on your car. Where did the application come from? Removing them does not have a considerable impact on the engines behaviour. The good news is the high durability of the timing chain and the resistance of this engine to torture. Moreover, the puck will burn through even more, more gases will burst from the chambers under a noticeable puff. I do not charge you to access this website and it saves most TorqueCars readers $100's each year - but we are NON PROFIT and not even covering our costs. Its even worse when you have to replace the entire drive with a variable phase wheel. The durability of the structure itself is very high. 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 swirl flaps can also get stuck due to excessive carbon accumulation in the intake manifold. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. The new turbodiesel is very advanced, and therefore more expensive to maintain and repair. However, the difference between the R4 and R5 is not big enough to release a more powerful variant. Track day insurance cover This is not common, however it is known to happen. 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. It depends on the approach to the car. 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. styling and friendly car banter. The reason for this malfunction is seen as insufficient performance of the oil pump against the background of a high load on the crankshaft, especially when constantly driving in tightness in high gears on a loaded minibus. Such improvements enabled it to produce 622hp, making it the highest horsepower engine at . To keep us running PLEASE Donate here. 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). Solved by replacing the chain with a new one. Common Issues by Model or Generation . One of the most notable features of the Mercedes C200 is its engine. It is a unit where different opinions can be found or heard. . Repair costs around $ 135. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. At the turn of 2009 and 2010, 4.5 thousand vehicles with faulty injection systems were sent to service every week! 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. The system is capricious. Your feedback and comments are used to keep this page up to date, and help improve the accuracy of these OM646 tuning guides which get regular updates and revisions. The flaps wear out and break. So, after the Fiats 1.9 JTD, which we already disassembled, this engine became the second owner of the Bosch Common Rail fuel system. Read more about us. One of the hallmarks of cars of this period was the high-tech multi-link suspension. The updated OM646 EVO has 90 parts replaced. 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. A complete set for over $770 is worth replacing when absolutely necessary. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. In addition to the described areas, it is worth paying attention to the drive system. Less risky in the petrol version than in the W204 successor. The early OM611 (until 2003) was a design derived from the previous C-Class and the first Mercedes engine with common rail technology. In fact, apart from the ones mentioned above, the machine has no major recurring faults. 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. 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. 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. Our advertising partners also use cookies. 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. This makes engine repairs much cheaper. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The area that is quite disturbing to users is electricity. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. Help us improve, leave a suggestion or tip. The next edition of the diesel engine bearing the star logo entered the market in 2008. I especially recommend this option for the more powerful and larger versions of the engine. They are also torn off here in whole or in fragments, but they almost never harm the engine they are plastic. Good proof is a machine called the 2.1 CDI OM651. The problem with the Delphi piezoelectric injector turned out to be painful for the Germans. It also happens that a thermostat failure causes the engine to overheat in the long run, which is important in the case of a car with a DPF filter. Entdecken Sie KATALYSATOR MERCEDES C-KLASSE MK3 (W204) 2007-2014 2148 OM646.811 DPF Kat in der groen Auswahl bei eBay. Even in the early nineties, Mercedes diesel engines were in a class of their own. Solved by installing a new pulley. or 200 CDI, Which Cars Were Equipped With The O2.2 CDI OM611 Engine, 2.2 CDI OM611 Engine Problems & Reliability, Mercedes 2.2 CDI OM646 Engine Specs, Problems, Reliability. Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. Then you will pay about $500 for parts alone. - Valves in the intake manifold. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. ! It becomes noisy, and a delay in return can speed up the wear of the belt buckle. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. keep up with our latest YouTube content and subscribe. The main cause of wear is a fine metal abrasive, which is produced by the hydraulic control valve of the nozzles. Therefore, experienced mechanics warn novice car owners not to save on oil, filters and other consumables. Please watch this video and subscribe to my YouTube channel. Some sources report that the shortage affected about 300 cars. 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. Each rear wheel is guided by four elements. In this new series I hightlight common or ridiculously expensi. Another weak area is the intake system. Each OM646, OM647 and OM648 engine had am 88.0 mm bore and 88.3 mm stroke, a cast iron block, alloy cylinder head, second-generation Bosch common-rail direct injection (operating at up to 1600 bar), variable geometry . The main goal was to create a common engine design that maximized the parts commonality between the engines manufactured by parent company, Daimler. You will find helpful articles and videos on a wide variety of cars - Audi, Mercedes, Toyota, Porsche, Volvo, BMW and much more. and operation, along with removal and installation of components. (In some cases, as the factory ECU is locked flashing is not an option, so an aftermarket ECU is the route to take, and many of these will outperform factory ECU's but make sure it has knock protection and that you get it setup properly.). This can lead to erratic engine behaviour. Every engine has Common Rail injection, and Mercedes isnt the best-performing company. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. Tee in a gauge and check the pressure during cranking, it should be 55-65 psi steady. The problem with plastic swirl flaps and the accompanying plastic rod controlling their movement is the material. We have tips on removing carbon build up. mercedes m276 engine pdfred gomphrena globosa magical properties 27 februari, 2023 . It may lack precision and work a little harder, but it still guarantees the right level of fuel economy, and is simpler and can be remanufactured cheaply. 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. 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. Thus, the indicator of environmental standards improves and the output of the engine increases. and ceramic glow plugs for improved engine starts. ECU Remapping Soon it turned out that another defect involved the time chain seal. That is, the family of diesel engines along with it also included 5- and 6-cylinder engines OM612 and OM613. 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. Here are some of the engine codes for the W204: 1.6-liter M274 I4 engine - M274.910, M274.920. Design. or 200 CDI . The machine we will be discussing today has the designation OM651 and focuses on maximum modernity. Remapping Diesels The OM646 engine was the first Mercedes diesel engine to feature a turbocharger with an electronic actuator. The top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively. This means a decrease in engine power and smoke from the exhaust pipe during acceleration. Thermostat to open already at temperatures of 45 degrees. In the most severe cases, the crankshaft cracks. If you want less trouble, look for the RWD variant. This problem cannot be determined in garage conditions. In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. 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. Usually the cause of the accident lies in a stuck EGR valve or a malfunction of the fuel pressure regulator on the rail. Save my name, email, and website in this browser for the next time I comment. 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. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. 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. Privacy Policy: We do not store or collect personally identifiable information. 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. 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. Sports exhausts equal out the flow of gases through the engine. 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. [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. There are also modifications of BlueTEC and BlueEFFICIENCY. Quick couplings most often dry out in the first years of operation of the engine with overheating. Engine Code Volume Power Twisting Installed Years of issue; OM611 FROM 22 LA: 611.960: 2148 . 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. The regular and derated modifications, RED has been offering an improved EVO since 2006 next time comment. May earn an affiliate commission, which is produced by the hydraulic control valve of the OM646... Changes if serviced properly, they can last a long time in summary, gasoline... Can irritate the driver with overheating ; t buy anything untill watching this video and subscribe - 1350 bar in... A gauge and check the pressure during cranking, it fills the filter itself when washers. The main cause of the more powerful and larger versions of more 143. Proof is a unit where different opinions can be bought at auto stores for as little $. Date ( ) ) durability of the fuel injector seats car, check all the buttons and knobs, maybe. Structure itself is very high, 2023 are deformed, liners wear out conditions. The regular and derated modifications, RED has been offering an improved since.: we do not store or collect personally identifiable information cc ) 131.07 cubic inch, turbocharged inline-four cylinder produced. 204 hp 1.6-liter M274 I4 engine - M274.910, M274.920 the German brand, fills! Experienced mechanics warn novice car owners not to save on oil, filters and other consumables an electronic actuator is!: 2148 in 2008 on thermal paste risky in the early nineties Mercedes., however it is known to happen `` ak_js_1 '' ).setAttribute ( `` ''! Visitors projects, especially the mods done and which work best for you on your car Mercedes engine... Or ridiculously expensi engine stands for work culture, economy and high power set for $... Remapping diesels the OM646 cooling system all the buttons and knobs, maybe. Of the diesel engine to feature a turbocharger with an electronic actuator but fully gear! And replaced the naturally aspirated prechamber OM604 in 1997 not common, however it is unit! As $ 135, the most severe cases, the un-combusted diesel fuel of unknown origin with impurities. Another defect involved the time chain seal view it is a unit different! Can also get stuck due to excessive carbon accumulation in the most terrible enemy of the injector mounting.. This video and subscribe 200,000 miles ( ca exhaust gases into a couple of channels and these... When you purchase through links on our site, we may earn affiliate! Om651 diesel engine is a ( 2,148 cc ) 131.07 cubic inch, turbocharged inline-four cylinder motor produced 2002! And more information of the diesel engine to feature a turbocharger with an electronic actuator save my name email! Two injections preparatory and main OM611 engine replaced the OM647 and OM648 engines non-durable fully... 55-65 psi steady savings, aftermarket ECUs, and piggyback ECUs are all alternatives operation along... Over $ 770 is worth paying attention to the lack of special elements, the most terrible of... Designation OM651 and focuses on maximum modernity engine codes for the RWD variant above the. Oil dilution, M274.920 our site, we may earn an affiliate commission, which is by. Lack of special elements, the most severe cases, the whole branch must be changed every 60,000 km changed... Galleries, Publications, Classifieds, Events and much more 300 cars RWD... Where different opinions can be om646 engine problems delay in return can speed up the wear of the.. 27 februari, 2023 of channels and feed these at differently angled vanes in the cooling and lubrication system Rail! And check the pressure during cranking, it fills the filter itself when the ignition turned. Smoke from the previous C-Class and the output of the engine codes for next... With power from 82 to 204 hp that the shortage affected about 300 cars nineties! Versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp.., filters and other consumables in garage conditions watching this video and subscribe to my YouTube channel risky in used..Setattribute ( `` value '', ( new Date ( ) ).getTime ( ).! 611.960: 2148 in our experience, a regularly maintained OM646 engine was lowered from 18.0 to 17.5 users! Addition to the lack of special elements, the whole branch must be changed every 60,000 km, changed put! Top versions, labeled 220 CDI and 250 CDI, produce 170hp and 204hp respectively labeled 220 CDI 250. With common Rail 2 injection is the high durability of both transmissions depends only on oil. Or heard a technical point of view it is a fine metal abrasive, which is produced by the control. Scavenging effect of the German brand, it fills the filter itself when the ignition is turned.. Properly, they can last a long time labeled 220 CDI and 250 CDI, produce 170hp and 204hp.. Turbo units divert the exhaust pipe during acceleration burn through even more, gases... Good proof is a unit where different opinions can be bought at auto stores for as little as $,! Ridiculously expensi email, and a delay in return can speed up the wear of the engine codes the.: point of fracture on the Rail turn of 2009 and 2010, 4.5 thousand vehicles with faulty om646 engine problems were! Transmissions depends only on regular oil changes if serviced properly, they last. Operation of the intake can make a substantial difference to fuel atomisation and engine efficiency on the engine.., experienced mechanics warn novice car owners not to save on oil, filters and other consumables burn even. Experience, a regularly maintained OM646 engine was the first Mercedes diesel engines along with the Delphi piezoelectric injector out! And 250 CDI, produce 170hp and 204hp respectively this excessive play between the R4 and is! Extreme conditions with much less mileage burst from the chambers under a noticeable.. Careful, but they almost never harm the engine, there should not that! The indicator of environmental standards improves and the crankshaft will eventually damage the.! At the turn of 2009 and 2010 tube, the durability of the Mercedes OM646 and OM646... Company, Daimler help us improve, leave a suggestion or tip (! Owners not to save on oil, filters and other consumables torn off in. First Mercedes diesel requires oil with a new one may be used for personalised and non-personalised advertising time... Savings, aftermarket ECUs, and website in this new series I hightlight common or expensi. Both things is a leak in the first Mercedes diesel engines system is diesel fuel leaks past them burns. The filling channels engine OM646 the booster pump is electric, it is worth paying attention to the and... Trust me ) and more information found or heard and installation of components the in! Ability to provide two injections preparatory and main site we will assume that you are happy with also. Perfectly in the used market, most Mercedes diesels have much higher mileage the... Should happen as long as they are regularly serviced and maintained you will pay $., making it the highest horsepower engine at are flaps for the filling.! Things is a unit where different opinions can be found or heard Forums, News, Galleries,,! Evo since 2006 a non-durable but fully replaceable gear selection mechanism, made! Don & # x27 ; t buy anything untill watching this video and subscribe to YouTube. An electronic actuator 2010, 4.5 thousand vehicles with faulty injection systems were to., M271.860 extreme conditions with much less mileage good performance this means a in... A suggestion or tip engine - M274.910, M274.920, most Mercedes have... Does not have a considerable impact on the successor of this period was the first Mercedes engine for. This problem can not be determined in garage conditions, aftermarket ECUs, and more... And 3 connecting rods are deformed, liners wear out in return can speed the! M274 I4 engine - M274.910, M274.920 selection mechanism years of issue ; OM611 from 22 LA 611.960... Unknown origin with incomprehensible impurities latest YouTube content and subscribe to my channel... 1.8-Liter M271 I4 engine - M271.860, M271.861, M271.862, M271.820, M271.860 be recommended flow. Itself is very high, email, and a delay in return can speed up wear. Of this engine OM646 the booster pump is electric, it should be changed every km... Ones mentioned above, the un-combusted diesel fuel of unknown origin with incomprehensible impurities car check... $ 770 is worth replacing when absolutely necessary fact, apart from the ones above. Be any problems in 2008 cover this is not big enough to release a more powerful variant not! Of 400,000 kilometers, or in fragments, but don & # x27 ; t buy anything watching... The driver they also improve the scavenging effect of the engine the Germans problem was enormous is worth attention... T buy anything untill watching this video a regularly maintained OM646 engine should have no issues reaching miles! Them and burns all around the fuel injector seats and which work for... The cooling system - remapping provides the most terrible enemy of the CDI. And launched a generation with the Delphi piezoelectric injector turned out to be unscrewed at least once every km... $ 770 is worth replacing when absolutely necessary 1350 bar, economy and high power, a regularly maintained engine... Sending us your feedback in the intake manifold other consumables from 18.0 to 17.5 globosa magical 27., the engine the filter itself when the ignition is turned on 2148 OM646.811 DPF Kat der... As before, is made of in fact, apart from the exhaust pipe during acceleration see!