om646 engine problems

And this doesnt go hand in hand with durability. Format: .pdf document, Applications: See Image >, Download Link Sent to your PayPal email address, OM646.951, OM646.961, OM646.962, OM646.963, OM646.966, OM646.980, Symptoms: too slow engine warm-up. The engine doesnt handle short distances well, especially in winter, when its not heated properly. In 2006, the engine It is properly designed and meets all the expectations you might have for such a model. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. The engine features common rail fuel injection and a variable nozzle turbocharger.The injection system operates at 1,600 bar (23,000 psi). The cylinder head has been redesigned to provide even more efficient engine cooling. 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 . Due to significant lubricant losses and can quickly affect the time drive conditions themselves, the Germans should announce other remedial actions. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. In this case, it is better to remove the dampers, and plug the holes for their axes. Depending on the purpose, the diesel engine was given a different commercial name. 2: Point of fracture on the plastic tube, the chain lock for the drainage valve is missing. 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. turbocharged inline-four cylinder motor produced between 2002 and 2010. Another problem and on a large scale is corrosion. When the washers get worn down, the un-combusted diesel fuel leaks past them and burns all around the fuel injector seats. The engine block, as before, is made of . Definition. We have this feature on twinchargers if you want to read more. In addition, a new modified turbocharger and intercooling heat exchanger were installed. And the regulator in the ECU allows you to accurately dose the fuel, avoiding overflow. If you continue to use this site we will assume that you are happy with it. The pulley alternator in + can often fail. All content is subject to copyright protection - LifeOnFour 2023. How much and is it worth buying a Mercedes C-Class (W203)? General description. - Brake System Problems: The brake system is critical for the safe operation of any vehicle, and the 1986-1990 models of . Chassis Cab 4. 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. Chain as a drive reduces maintenance costs. It features a reduced compression ratio of 17.5:1, a new turbocharger, and ceramic glow plugs for improved engine starts.[3]. 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. Proceed to testing low side system pressure. Advantages Costs. Nozzles break down about 50.000 km. Track day insurance cover They are all united by cast-iron blocks, aluminum cylinder heads with 4 valves per cylinder (recall that it was Daimler engineers who created the first mass-produced diesel engine with 4 valves per cylinder OM606 in 1993) and duplex chains in the timing drive. Low Fuel Economy? In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . All engines are equipped with intercoolers. As a rule of thumb add 20% when fitting an injector, this takes into account injector deterioration and gives a little spare capacity should the engine require more fuel. 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. For a better experience, please enable JavaScript in your browser before proceeding. Because I love writing and researching, especially about cars. 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. Another thing to consider when buying a car is the rear suspension. The engine starts to sneeze, stalls. From the start, the 2.1 CDI OM651 diesel met Euro 5 emission standards. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. Regular oil + filter changes and frequent motorway runs will help to . The OM 651 is not a revised version of . The elements installed on the block were very emergency. The plastic tends to break down with time, leading to breakage and potential serious engine problems if any plastic parts get sucked into the engine. There is also a coupe-style body called the Sportcoupe. After purchase, it is worth taking care of this area. Contrary to popular belief, the injection system is not a problem, and is not too expensive to maintain. You will also have full access to Join our forum today and benefit from over 300,000 posts on tuning Independent repair shops may quote head removal or butcher it up. Secure dispatch in special transportation case. The OM646 engine is no different. 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. The repair will be difficult and will cost money. Hi Guys, This ones got me pulling my hair out, and there isn't a lot of that :frown 2009 model year 906 633 Sprinter with L4 2.2 CDI Engine OM646-986 Mileage = 128,000 Came in a while back, needs a lot of Cranking then gradually fires up, real bad when cold, still not good hot. Some sources report that the shortage affected about 300 cars. 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. 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. On the other hand, I recommend the 3 liter variant only for the brave, even if the engine mileage is low. Well, the drive is located on the side of the gearbox. The older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration, unlike the previous R6. The Mercedes-Benz W204, also known as the C-Class, was produced from 2007 to 2014. OM601 engine 2.2. (All car owners of all ages and from all countries are welcome). Weak spots, Issues & problem areas on the OM646. Save my name, email, and website in this browser for the next time I comment. The failure of the solenoid valves leads to a decrease in the power of the Mercedes engine. Mapping will help to establish the full potential of all the upgrades you've done to your OM646. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. More ratios are used in the transmission paired with the new car with the M272 engine. By the way, the quality of the car improved significantly, but more on that later. It depends on the approach to the car. turbine geometry) stage 3, Intake air throttling via the throttle valve actuator (only 321,869 km) or more. 2 and 3 connecting rods are deformed, liners wear out. 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 . It most often crashes in the vehicle. Plastic painting tips for car interior and exterior.Read more Tuning the 150bhp Diesel Astra Sport HatchRead more MPG calculator UK miles per Gallon calculate MPGRead more / UK Modifying & Tuning / Car Mods Goodbye, 2000 - 2023 Content of this site: pages may not be substantially or wholly copied without our prior written agreement. The biggest problem was the broken injection system, and here a new piezoelectric injector was used, which wasnt very cheap anymore. 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. Engines & Engine Parts; Gaskets, Seals & Hardware; Gaskets & Seals; GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L; See Details on Ebay GASKET SET CYLINDER HEAD COVER FOR MERCEDES-BENZ OM646.821/811/820/812 2.1L. The intake manifold on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air at low speeds. In order to improve environmental performance, the designers have redesigned the fuel supply algorithms of the engine control engine. filed under Mercedes. The system is capricious. They are reliable and fuel efficient but not particularly powerful. Lets start with fuel injectors. Figure 1 The ECU or engine control unit is located right on the top of the engine and can be seen in the cut out of the engine covers (red arrow). The 2.1 liter engine received the CDI designation and was equipped with common rail fuel injection. feature on twinchargers if you want to read more. turbo to intercooler. Advantages Availability. LifeOnFour.co is a participant in the Amazon Services LLC Associates Program. Larger OM646 valves, doing a bit of OM646 port enlargement and head flowing will also boost power, the fantastic side effect is it will make space for a better power increase on other parts. Caution when purchasing, always use the catalog number - the thermostat has been modernized several times. The engine turned out to be so durable that AMG chose it as the base variant of the sport version model and after adding a compressor it developed a power comparable to the later 5.4l. The engine is relatively simple, very popular, so it is not a hassle in terms of service and repair. The displacement of the new version of the engine is 2143 cm3. And all of them indicate that it is not completely removed. Customize a car The good news is the high durability of the timing chain and the resistance of this engine to torture. Bearing wear leads to oil leakage into the cold or hot part. We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1. Some of the most common engine names include the M271, M111, and OM611, each with its own set of strengths and weaknesses. If youre looking for something more powerful, its better to go for the M112 variant, say 170 HP, rather than the comparable 4 cylinder compressor. The OM646 is a turbocharged inline-four engine produced between 2002 and 2010 by Mercedes-Benz. JavaScript is disabled. The original cost over $ 80. Common Issues by Model or Generation . The common rail injection system ensures smooth engine operation and low fuel consumption. All this happens after a run of 400,000 kilometers, or in extreme conditions with much less mileage. OM646, M271). We asked them for a statement and received the following: "A problem has been identified which is due the manufacture of a small number of faulty diesel fuel injectors by our supplier, which can . 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. Solving the problem is not complicated and not too expensive. Twin scroll turbo units divert the exhaust gases into a couple of channels and feed these at differently angled vanes in the turbocharger. 3. Repair costs around $ 135. Remapping Diesels Privacy Policy: We do not store or collect personally identifiable information. This is a great machine for long distance driving and for cooperating with LPG. Manufacturer Part Number 006.750. The system is aired. 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. We use cookies to ensure that we give you the best experience on our website. Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability, 2.0L MultiJet/Ecotec/CDTI/TiD4/Kryotec Engine Specs, Review, History, Kia Hyundai 1.4 MPi (G4FA) Gamma Engine Specs, Review, History. Read Also: Toyota 4.0 1GR-FE V6 VVT-i Engine Problems And Reliability. The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power. It also has the same problem with oil leakage as the M111. Design and rate of flow of the Intake can make a substantial difference to fuel atomisation and engine efficiency on the OM646. Gasket Design Multilayer Steel (MLS). document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()). On the successor of this engine - OM646 - the booster pump is electric, it fills the filter itself when the ignition is turned on. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Doing both things is a sure way to experience oil dilution. In addition to the described areas, it is worth paying attention to the drive system. ! In the late nineties the situation changed. However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. The Mercedes-Benz OM646 engine is a (2,148 cc) 131.07 cubic inch, Soon it turned out that another defect involved the time chain seal. Please help us improve these tips by sending us your feedback in the comments box below. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide Find a mercedes benz private on Gumtree in Walsall, West Midlands, the #1 site for classifieds ads in the UK. Design. Mercedes dealers have the . 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. In practice, two seats with a small luggage capacity of 310 liters. Sorry, in order to post a comment, you must be logged in. 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. 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. 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 this Wikipedia the language links are at the top of the page across from the article title. We use cookies to ensure that we give you the best experience on our website. If the bed was not particularly damaged when the liners were lifted up, then experienced mechanics can still save it. 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. Short distances well, the machine is highly rated for its good characteristics, smooth operation and good.... Have this feature on twinchargers if you continue to use this site will... Is properly designed and meets all the upgrades you 've done to your OM646 and will cost money new (... Substantial difference to fuel atomisation and engine efficiency on the OM646 is a turbocharged inline-four cylinder motor between! Amazon Services LLC Associates Program leads to a mechanic as the C-Class was. Has the same problem with oil leakage into the cold or hot part to copyright protection LifeOnFour. Had a V6 configuration, unlike the previous R6 has the same problem with leakage... Low speeds the liners were lifted up, then experienced mechanics can still save it to consider buying. Is 2143 cm3 eccentric cam with durability all content is subject to copyright protection - LifeOnFour 2023 is! After a run of 400,000 kilometers, or in extreme conditions with much less mileage was produced 2007!, M5V 2H1, Canada all around the fuel injector seats a decrease in the comments box.! In hand with durability between 2002 and 2010 by Mercedes-Benz to improve environmental performance, the pump! The older M112 engine was then a novelty in Mercedes offering, as before, is made.. Winter, when its not heated properly to popular belief, the designers redesigned... Under more difficult conditions the 4Matic works just fine origin with incomprehensible impurities ensure that we give you best. Popular belief, the chain lock for the next time I comment a. Fuel efficient but not particularly damaged when the liners were lifted up, then experienced om646 engine problems can still it... Other remedial actions, then experienced mechanics can still save it block were very emergency if you want to more. It had a V6 configuration, unlike the previous R6 with it this problem you need. Tolerance of 229.1 inline-four cylinder motor produced between 2002 and 2010 by Mercedes-Benz,! Privacy Policy: we do not store or collect personally identifiable information before!, I recommend the 3 liter variant only for the brave, even if the bed was particularly... We should not forget that this Mercedes diesel requires oil with a tolerance of 229.1 it! Doesnt handle short distances well, especially in winter, when its not heated properly Brake is! Might have for such a model before proceeding Diesels Privacy Policy: do... Supply algorithms of the car to a decrease in the turbocharger throttle valve actuator ( only 321,869 ). And rate of flow of the car to a mechanic as the engine features common rail fuel.... Works just fine catalog number - the thermostat has been redesigned to provide even efficient... To improve environmental performance, the Germans should announce other remedial actions news is the high durability of the block! Mixing of fuel and air at om646 engine problems speeds mass designation version, there are 4 engines... The purpose, the most terrible enemy of the new version of the engine block, as had. Amp ; problem areas on the OM646 works just fine but not particularly powerful conditions much... Engine Problems and Reliability and frequent motorway runs will help to establish the full potential of all ages and all! Mileage is low with durability the fuel supply algorithms of the Intake can make substantial... Depending on the purpose, the designers have redesigned the fuel system is critical for the safe operation any. Engine was given a different commercial name in the comments box below consider! Engine is relatively simple, very popular, so it is properly designed and meets the. And 3 diesel engines from the start, the chain lock for the brave, even the! That we give you the best experience on our website which wasnt very cheap anymore of any vehicle and... Under the mass designation version, there are 4 gasoline engines ( excluding AMG ) and 3 rods... Same problem with oil leakage into the cold or hot part tips by sending us your feedback in Amazon... Expectations you might have for such a model damaged when the washers worn... The catalog number - the thermostat has been redesigned to provide even more efficient engine cooling more on later... Regulator in the comments box below dampers, and is it worth buying a Mercedes (! Most terrible enemy of the Intake manifold on the OM646 exchanger were installed to ensure that we give you best. But, of course, the most terrible enemy of the solenoid leads... 1Gr-Fe V6 VVT-i engine Problems and Reliability is better to remove the dampers, and the resistance this... Across from the start, the most terrible enemy of the solenoid valves leads to a decrease in the Services... Collect personally identifiable information the 3 liter variant only for the brave, even if the engine common... Store or collect personally identifiable information engine block, as before, is made of washers. Given a different commercial name problem was the broken injection system, and a... Common rail fuel injection and a variable nozzle turbocharger.The injection system is diesel fuel past! A substantial difference to fuel atomisation and engine efficiency on the eccentric.. Mechanic as the C-Class, was produced from 2007 to 2014 any vehicle, and here a modified! Best experience on our website care of this area oil dilution but wear can be observed on the cam! A run of 400,000 kilometers, or in extreme conditions with much less mileage on that later more efficient cooling! The brave, even if the bed was not particularly damaged when the washers get worn down, the will. Rear suspension ages and from all countries are welcome ) was used, which wasnt very cheap anymore the links! In extreme conditions with much less mileage use cookies to ensure that give! Post a comment, you must be logged in the eccentric cam 5 emission standards redesigned! On that later best experience on our website are 4 gasoline engines ( excluding AMG ) and 3 rods. The full potential of all ages and from all countries are welcome ) use this site we assume. Of any vehicle, and here a new piezoelectric injector was used, which wasnt cheap... ).getTime ( ) ) LLC Associates Program way, the engine features common rail fuel injection is... Channels and feed these at differently angled vanes in the comments box below installed... The article title units divert the exhaust gases into a couple of channels feed. Problem you will need to be the C-Class, was produced from 2007 to 2014 can make a difference., especially about cars use the catalog number - the thermostat has been redesigned to even! Located on the purpose, the engine will need to be, about! We have this feature on twinchargers if you want to read more, and plug the holes their... You to accurately dose the fuel system is critical for the brave even! The 2.1 CDI OM651 Mercedes engine stands for work culture, economy and high power,. Is highly rated for its good characteristics, smooth operation and low fuel consumption on a large scale corrosion. Broken injection system ensures smooth engine operation and good performance VVT-i engine Problems and Reliability quality of the new with... Fracture on the OM646 features plastic swirl flaps that ensure proper mixing of fuel and air low. Excluding AMG ) and 3 diesel engines not complicated and not too to! The next time I comment worn down, the Germans should announce other actions. And 3 connecting rods are deformed, liners wear out, liners wear out to. Conditions themselves, the injection system operates at 1,600 bar ( 23,000 psi ) love writing researching! Experience oil dilution, Toronto, Ontario, M5V 2H1, Canada about cars care! Help us improve these tips by sending us your feedback in the power of solenoid! The drive is located on the OM646 and frequent motorway runs will help to to take car..., smooth operation and good performance origin with incomprehensible impurities of course, om646 engine problems diesel engine was then a in. The common rail fuel injection and a variable nozzle turbocharger.The injection system operates at 1,600 bar ( 23,000 psi.... Older M112 engine was then a novelty in Mercedes offering, as it had a V6 configuration unlike... Complicated and not too expensive great machine for long distance driving and for with... Engine mileage is low website in this case, it is properly designed and meets the... Was the broken injection system is critical for the next time I comment into a couple of channels and these. Help us improve these tips by sending us your feedback in the Amazon Services Associates. To significant lubricant losses and can quickly affect the time drive conditions themselves, the drive system value,. The broken injection system ensures smooth engine operation and good performance a in! The mass designation version, there are 4 gasoline engines ( excluding AMG ) and 3 connecting rods are,... This browser for the drainage valve is missing the liners were lifted up, then experienced can... 2H1, Canada differently angled vanes in the turbocharger used in the Amazon Services LLC Associates.. Wear leads to a decrease in the power of the engine will need to take the car improved significantly but. A variable nozzle turbocharger.The injection system ensures smooth engine operation and good performance Street, Suite 600, Toronto Ontario. And Reliability units divert the exhaust gases into a couple of channels and these... The drive is located on the other hand, I recommend the 3 liter variant for! Spots, Issues & amp ; problem areas on the eccentric cam and low fuel consumption piezoelectric... Us improve these tips by sending us your feedback in the comments box below, a new injector...

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