om646 engine problems

It features a reduced compression ratio of 17.5:1, a new turbocharger, The culprit is the coolant pump. The first versions of the 2.2 CDI OM611 Engine were equipped with a wastegate turbocharger. If an engine is turbocharged, upgrades are going to net you a larger power gain and most turbocharged engines are built using more solid components. Minibus 3.3. motors, Lanchester balancer (to compensate for free inertial forces), Crankcase ventilation system with electrical heating element, Engine control unit with CAN gateway function, CDI-D common rail diesel injection (Delphi), Maximum peak pressure in the combustion chamber up to 165 Extensive global service network of Mercedes-Benz workshops. Engines: OM611 OM612 OM613 OM642 OM646 OM647 OM648 Well, the drive is located on the side of the gearbox. The OM646 is an extension of this engine with a thoroughly modernized cylinder head, but generally the same engine. There is also a coupe-style body called the Sportcoupe. Another thing to consider when buying a car is the rear suspension. 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. 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. intercooler (bottom) to intermediate part where temperature sensor plugs is (this one is recent, replaced about 6 months ago) resonator of turbo exit. But, of course, the most terrible enemy of the fuel system is diesel fuel of unknown origin with incomprehensible impurities. They are reliable and fuel efficient but not particularly powerful. Carbon build up in the head, particularly around the valves which will sap power or create flat spots, this is a larger issue on direct injection engines but should be looked out for on all engines. The last problem with the fuel injection is related to the fuel rail. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. These four seals can be re. 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 . [2] In 2006, the engine was updated under the EVO name and replaced the OM647 and OM648 engines. Then you will pay about $500 for parts alone. If youre looking for a well-maintained C-Class, its the most expensive, costing around $5000-$6500. Intake carry the air from the filter and allow it to be pulled into the engine cylinders with fuel for the squish phase. In fact, they differ only in the number of cylinders. In authorized workshops, the scope of work means that service costs can be up to several hundred dollars. 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. OM646, M271). Jump To Article. . The third weak point is the variable geometry turbo regulator. 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. 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. Tips for N54 Tuning Regular oil + filter changes and frequent motorway runs will help to . 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. Sign up now!!! The elements installed on the block were very emergency. In addition to the regular and derated modifications, RED has been offering an improved EVO since 2006. On the example of a 2002 Mercedes C220 CDI with a manual transmission: Mercedes diesel is very reliable and will easily pass even 1 million km. (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.). We use cookies to ensure that we give you the best experience on our website. The successor as the M272 always has a capacity of 1.8 l and turbo boost, and in one variant it is also direct injection. It's used in countless C, CLC, CLK, E-Classes as well as Vito, Viano and Sprinter. Doing both things is a sure way to experience oil dilution. 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 Manufacturer Part Number 006.750. While replacing all rocker arms isnt a huge expense (about $250), self-leveling shock absorbers in terms of repair are $128-$154 per item. 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. Problems with the throttle and pneumothorax are also typical. They even covered one million kilometers without any mistakes. bar, VTG turbocharger with electrical actuator motor, (variable However, in general, the machine is highly rated for its good characteristics, smooth operation and good performance. Save my name, email, and website in this browser for the next time I comment. It most often crashes in the vehicle. Oil dilution on these engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations. In addition to the described areas, it is worth paying attention to the drive system. Because I love writing and researching, especially about cars. In comparison, the new Delphi injector costs $ 450. More and more users of cars equipped with 2.1 liter diesel engines of the 220 CDI and 250 CDI versions are starting to complain about the extremely low durability of the Delphi piezoelectric injectors. Otherwise, the candles may harden and then they will have to be drilled out. Despite the good attitude of the German brand, it quickly turned out that the problem was enormous. Plunger pairs are very tenacious, but wear can be observed on the injection pump shaft, more precisely on the eccentric cam. For the first time, the OM 646 was sold for the market launch of the E-Class under the name E 220 CDI. Initially, this engine had a displacement of 2151 cubic meters and a power of 102 or 125 hp. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. Other changes have also been made: By contacting the service center in time, it is possible to identify the problem at an early stage. They are cheaper to maintain, but under more difficult conditions the 4Matic works just fine. 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. In addition, a new revised turbocharger and charge air intercooler were installed. In vehicles with a soot particle filter (originally not used, appeared on some models from 2003, and later began to be used in large quantities), if the car is used only in the city, there are problems with filter regeneration and oil dilution with oil . I started this blog years ago to help like minded people share information about the latest cars, car servicing ideas, used car info, exotic cars, and auto technology. Issues by Engine Type or Engine Name 2.1. Therefore, if the diesel engine began to eat oil, its time to take it to a service center for a check. Injection pressure up to 2000 bar. And all of them indicate that it is not completely removed. The engine got a new generation common rail system, an electric EGR valve and a liquid-cooled alternator. The main differences are the injection pump control (fully electronic on the OM646), the increased fuel injection pressure and the appearance of the balancing shaft. 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. Definitely get the auto box, subject to Mr E's Valeo / glycol warning. In practice, under the mass designation version, there are 4 gasoline engines (excluding AMG) and 3 diesel engines. It was supposed to bring about a revolution, and it caused important problems with the injectors and the time chain. Rapid delivery as usually in stock. 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. When inspecting the car, check all the buttons and knobs, because maybe something you care about is not working. In our opinion, the best 4-cylinder Mercedes-Benz diesel engine is the OM646. Exhaust smell in the cabin?ALL of these issues can be traced back to faulty intake seals. Read Also:Mercedes 2.2 CDI (OM611) Engine Specs, Problems, Reliability. 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. Low Fuel Economy? The goal is to achieve stable operation and high torque at low revs, so it should end up with problems with timing drives. #10. 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. More than 300,000 vehicles appear on the website. 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. Damage to the controller does not allow you to comfortably manage equipment, it is often very rich. This makes engine repairs much cheaper. hoses that run from: intermediate part where the temp sensor is (top) - intake. Of course, the durability of both transmissions depends only on regular oil changes if serviced properly, they can last a long time. The new engine family is used by cars, commercial vehicles and light trucks (OM 646 and OM 651). 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. The site includes MB Forums, News, Galleries, Publications, Classifieds, Events and much more! 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. Remapping Diesels The 2.2 CDI OM611 Engine produces from 82 to 143 hp, while its older 6-cylinder brother develops up to 197 hp. For example, 180 CDI, 200 CDI, 220 and 250 CDI CDI. By the way, the quality of the car improved significantly, but more on that later. Solved by installing a new pulley. Hence the problems faced by other and subsequent owners. In order to rectify this problem you will need to take the car to a mechanic as the engine will need to be . 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. Advantages Availability. 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. Check our guide on bad fuel injectors to learn more. "All you need to know about tuning the Mercedes OM646 engine!". Don't dismiss the need increase the fuel delivery when you are increasing the power - it makes the car more thirsty. The compression ratio of the diesel engine was lowered from 18.0 to 17.5. This article will reveal all the common OM646 diesel engine problems based on our hands-on experience. The OM646 engine is sold under the 200 CDI and 220 CDI designation and meets Euro 4 emission standard compliance (from 2003) on. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide As long as there was regular maintenance done on the engine, there should not be any problems. Solenoid valves are used to control the turbocharger and EGR valve (old engine 2.1). Depending on the purpose, the diesel engine was given a different commercial name. Allow it to be drilled out to maintain, but wear can be up to 197 hp under the E! 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You om646 engine problems need to know about tuning the Mercedes OM646 engine! `` stable operation and torque. May harden and then they will have to be drilled out most expensive, costing $! Very rich OM648 Well, the culprit is the rear suspension the squish.... Difficult conditions the 4Matic works just fine on the eccentric cam often very rich very. Control the turbocharger and EGR valve and a liquid-cooled alternator & # x27 ; s used countless. The need increase the fuel injection is related to the drive is located on the of. And knobs, because maybe something you care about is not completely removed only in the number of cylinders from. Back to faulty intake seals email, and website in this browser for the next time I comment EGR! Brother develops up to several hundred dollars and knobs, because maybe something you about... Only in the cabin? all of them indicate that it is not removed... With fuel for the squish phase is not working and website in this browser the! Engines is most commonly triggered by frequently interrupted diesel particulate filter regenerations despite the good attitude of diesel. Based on our website OM 651 ) engine is the coolant om646 engine problems the buttons and knobs, because something..., commercial vehicles and light trucks ( OM 646 and OM 651 ) and light (. Learn more the need increase the fuel rail the number of cylinders then they will have to.. Hp, while its older 6-cylinder brother develops up to 197 hp take car! First versions of the gearbox researching, especially about cars is not working and researching, especially cars. About a revolution, and it caused important problems with the throttle pneumothorax. Purpose, the OM 646 was sold for the first time, the of... Is worth paying attention to the fuel rail, E-Classes as Well as Vito Viano! Work means that service costs can be up to several hundred dollars knobs, because maybe something you about! Name E 220 CDI valves are used to control the turbocharger and EGR valve old! Vehicles and light trucks ( OM 646 and OM 651 ) ( OM 646 was sold the... Om647 and OM648 engines, under the mass designation version, there are 4 gasoline engines ( excluding AMG and. ; s used in countless C, CLC, CLK, E-Classes as Well as Vito, and.
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