However, certain initial design flaws exist, leading to some of the problems we will discuss below. Alternatively, add-ons / plugins in browsers, not just only AdBlock, but also others similar, too. Be sure to keep up with our latest YouTube content and subscribe. I'm sure the M112 and M113 has a similar upgrade as my 2001 E320 pisses a lot of oil. Many Mercedes drivers appreciate the durable construction of these M104s. Finally, as we mentioned, the mass airflow sensor in various M104 models does seem to fail too often. Some may consider Mercedes-Benz solely a luxury brand. Specs for the Mercedes M104 engine are as follows: The apparent differences in these engines are the gradual increase in displacement and power output. Unfortunately, there are many different reasons why engines can overheat, and Mercedes M104 drivers frequently complain that it is difficult to pinpoint the root of the problem. 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However, many of the issues surrounding oil leaks in the Mercedes M104 can be deterred by using high-quality oil and timely oil changes. Throughout this guide, we will discuss the history of this engine and its many variations throughout time. Thats enough to provide strong engine response while the turbo gets up to speed, at which point a check valve closes and the turbo takes over from the electric supercharger. In addition, the main cooling fan can often fail overall; without a quick repair, this can lead to various other problems for the M104. Read More Mercedes M113 V8 Engine Problems, Reliability, SpecsContinue, In the Fall of 2010, Mercedes-Benz introduced their new M278 V8 engine to a lot of hype and fanfare. Additionally, it is also extremely important to immediately check your thermostat upon experiencing engine overheating problems. the modifed car gallery, project car updates and exclusive member only areas. Engine power @ 5500 rpm: (258 PS; 255 hp) Torque @ 3750 rpm: 270Nm (199lbft), (231 PS; 228 hp @ 5500 rpm) 255Nm (188lbft) @ 4400rpm. Another possible cause of overheating is a failing water pump. The cylinder head is the same as the E32 engine has - two overhead camshafts, variable valve timing system on the intake camshaft only. It does not shy away from doing thousands of miles! Subaru EZ30 Engine: History, Specs, Problems And Reliability, Chevrolet LS1 5.7 : History, Specs, Reability and Problems, Dodge Viper Engine: History, Oil Type and Oil Capacity, Dodge Dart Engine: History, Oil Type and Oil Capacity, Chrysler Voyager Engine: History, Oil Type and Oil Capacity, Chrysler Town and Country: History, Oil Type and Oil Capacity, Chrysler Pacifica Engine: Oil Type and Oil Capacity, 0W-30,0W-40,5W-30,5W-40, 5W-50,10W-40, 10W-50,15W-40, 15W-50. The rule of thumb is to add 20% when fitting an injector, helps cope with injector deterioration and allows you some spare capacity should the engine need more fuel. Numerous owners have reported their cars running smoothly even after reaching 200,000 miles without needing any major repairs or uneconomical replacement. Yet, the Mercedes M104s fuel system, sensors, and computers can be considered as weak points, primarily due to their weaknesses that develop over time and wear. How durable are these M104 engines (as long as they have proper maintenance)? 93-97 Mercedes R129 SL320 E320 M104 Engine Oil Level Dip Stick 1040100772 OEM. Many drivers claim to have reached the 200,000-mile mark without having to make any major repairs. Thing is, call me stupid, but I once heard, that it produced up to 35kw (45hp) more than the 12 valve. Additionally, worn valve stems can also be a common cause of nagging leaks and higher oil consumption. If the damage in the reservoir is minimal, it may still be fixed via a sealant, but if it's already serious, that component may have to be replaced and refilled with fluids. Of course this new straight-six measures 3.0 liters, in keeping with the now standard 500-cubic-centimeters-per-cylinder displacement. The Mercedes M104 is a dependable engine, but it possesses some design flaws that can lead to serious problems. Few problems should happen as long as they are regularly serviced and maintained. Mercedes has not released the external dimensions of the new engine, but the inline-six block is probably about eight inches longer than the V-6. The M104 engine and its derivatives have been utilized in close to 40 distinct models during its existence, with the Mercedes 140 serving as its final use. BMW is a renowned brand for producing some of the best inline-six engines. Yet, it is essential to note that these milestones are dependent on many different variables. Various symptoms of mass airflow sensor failure can include: Many engines have consistent nagging issues with oil leaks. Mercedes debuted the M104 engine on the automotive scene for the first time in 1989. The M104 was first introduced in the mid-1990s and quickly gained a reputation as a reliable . Mercedes M256 Engine Reliability & Problems. Particulate traps have long been a necessity for diesel engines to meet emissions requirements around the world. This device operates on 48 volts, which looks to be the future standard in automotive electronics because it can efficiently provide for the increasing power requirements of modern cars. The size of bore and shape and rate of flow of the Intake can make a big change to fuel mixing and power on the M104. Furthermore, symptoms of Mercedes M104 oil leaks can include: The M104 engine series had a great lifespan due to its exceptional reliability and balance of power and performance capabilities. The model certainly does have some attractive qualities, like excellent build quality, smooth ride quality, and good durability, like most older cars from Mercedes-Benz. Mine was overhauled at 420k kms after its second head gasket failure. The 3.0-liter M104 was the start point for the new 3.2l version. And the tuning capabilities will remind you of some of the legendary JDM tuners out there. The issues about it are fairly few and repairable at their onset. Subscribe for updates! In addition to this 48-volt system, there is a separate 12-volt electrical systemwith its own small batteryto operate the numerous legacy 12-volt devices on the car. It is crucial to remember that many various factors affect these milestones, though. Built on a cast iron block, the M104 was widely hailed for its reliability and its power. But, again, no engine is absolutely perfect or made of stone. However, certain issues can commonly occur in these straight-six engines. 992 (1992-onwards) analogue of the M104,991 with a 9.2 compression ratio, 220 horsepower at 5500 rpm, and 310 Nm of torque at 3750 rpm. The Jaguar XK-6 does not need any introduction. Toyota used this one for their legendary 2000GT after all. Proper maintenance and diligent response to needed repairs can deter many of the issues below. Meanwhile, its compression ratio lies between 9.2:1 and 10.5:1 for its standard Benz and high-performance AMG models. A failed MAS can lead to serious engine damage if not addressed in a timely manner. For another, a larger turbocharger flows better and creates less back pressure at high rpm, extending the engines powerband. Save my name, email, and website in this browser for the next time I comment. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. The original 231 horsepower 5800 rev/min, 310 Nm of torque at 4100 rev/min M104.990 (1991 to 1993 onwards). Related: Why Yamaha Is Developing A 5.0-Liter V8 Hydrogen Engine For Toyota. Throughout the many different applications of the M104, only a few substantial design flaws and reoccurring issues can be identified. Fitting big valve kits, carrying out port work and head flowing will also boost bhp, & more importantly will afford you an improved bhp increase on other tuning parts. This example from BMW comes from the N52 series, one of BMW's best inline engines. (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.). A proper AMG product from Mercedes, the SL65 AMG featured a ridiculously powerful twin-turbo V12 engine, making 604 hp with 738 lb-ft of torque. But near a mileage of 100-150k miles, auxiliary engine systems start to fail. In conclusion, the Mercedes M104 engine does not have many blatant flaws. Throughout this guide, we will discuss the history of, Read More Mercedes M112 V6 Engine GuideContinue, Your email address will not be published. However, no engine is perfect and there arent any exceptions here. Wiper blades are even questionable, at least for the front mono wiper. Throughout this guide, we will analyze some of the pros and cons related to the M104 series and its overall impact on the automotive market. Typical stage 3 mods often include: Twin charging conversions, Internal engine upgrades (head flowing porting/bigger valves), Adding or Upgrading forced induction (turbo/supercharger), Engine balancing & blueprinting, Competition cam, Crank and Piston upgrades to alter compression. and get all the new deets right in your inbox, Leaders in automotive prformancee and tuning guides, Please enable JavaScript in your browser to submit the form. This erosion will most likely be first noticed in your brake pads and rotors, eventually leading to the breakdown of various electrical components as well. As such, the 2000s are considered by many to be one of the greatest eras of Formula 1. The naturally aspirated straight six! Like the Jaguars' E-Type, this engine is also somewhat timeless. This engine has its crankshaft and cylinder block. Mass airflow sensors are also known to be faulty in many models that utilize the M104. An electric water pump can be precisely controlled to provide the engines exact cooling requirements, facilitating rapid warmup. The Mercedes M104 engine can be quite reliable if you maintain it well. . This is usually caused by a faulty gasket or seal and can be fixed by replacing the faulty part. By 1999, the existing M104 24-valve inline-six was phased out. Mercedes M113 V8 Engine Problems, Reliability, Specs. Then the electric supercharger spins up in 0.3 second to deliver useful boost. 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 engine is popular for its reliability as most owners report it can last over 300000 miles with scheduled services. 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. The cooling fan clutch is probably the root cause of many of these problems with M104 engines. Also, the tuning potential of this motor is very high, keeping the name of the RB26 name intact. 3 BMW N52. The Mercedes M112 E32 series is the engine that will be discussed today. Oil leaks. However, that did not stop Mercedes from continuing to update the M104 and expand its usage for many more different applications. The self-appointed smart set think the internal-combustion engine is on its last legs, but not Mercedes-Benz. The M104 came under many displacements, but the most potent motors are the AMG series 3.4-liters and 3.6-liters. Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to this engines design, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. Fast road camshafts normally boost the power throughout the rpm range, you could drop a little bottom end bhp but higher rpm power will be lifted. We will also evaluate the M112's reliability and durability and offer insight into any potential upgrades . Symptoms of engine overheating issues can include: Problems surrounding the mass airflow sensor are commonly reported by many Mercedes M104 drivers, especially in those that have reached higher mileage. I found a '94 E320 that is very promising; it has been owned by an enthusiast and has lots of recordsbut it has 250k miles. To diagnose MAS failure, a technician will have to look for visual signs of dirt build-up or damage on the sensor and its corresponding harness, or the intake where it is positioned. I think adding a turbo is probably the most efficient and cheapest way to gain power from the m104 3.2L engine. Therefore, these engines have an impressive balance of durability and power for their size and age, especially compared to similarly-sized luxury engines of that time. M112 E32 3.2l Engine Problems and Reliability 1. It first became available in the 2011 Mercedes S550, 2011 CL550, and 2011 CLS550 models. Another BMW engine makes this list, and this one is even crazier. Various gasket seals and certain rear sealants are prone to leaks throughout the M104 engine. And can be quite reliable if you maintain it well stop Mercedes from continuing update... Of overheating is a failing water pump M104 models does seem to fail too often have policy. At least for the first time in 1989 the 200,000-mile mark without having to make any major repairs uneconomical. By replacing the faulty part engine overheating problems airflow sensor in various models... 0.3 second to deliver useful boost flaws and reoccurring issues can be quite reliable if you maintain it.... 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