Any leaks should be visible once the plastic engine cover is removed. It was followed in 2012 & 2013 with the addition of the Mercedes-Benz SL550, Mercedes-Benz E550 and the Mercedes-Benz GL550. That's one of my favorite cars, it's badass! I was thinking about getting it dyno tuned at one of the best tuning places in Arizona, one of their tuners used to work at Renntech so they get a lot of Mercedes. All the while, more and more metal is being ground away from the gears. [2], Mercedes-Benz estimate that these changes, in conjunction with vehicle modifications such as a stop-start system, allow the 4.7–litre M278 to have 22% lower fuel consumption and CO2 emissions than the 5.5–litre M273 while producing more power 320 kW (435 PS; 429 bhp) versus 285 kW (387 PS; 382 bhp) and torque 700 N⋅m (516 lb⋅ft) versus 530 N⋅m (391 lb⋅ft). [10] Beginning with the 2014 E-Class and CLS-Class, power increases to 410 kW (557 PS; 550 bhp) 720 N⋅m (531 lb⋅ft) of torque for standard tune, or 430 kW (585 PS; 577 bhp) with 800 N⋅m (590 lb⋅ft) of torque for "S-Model" variants. All Mercedes-Benz W221 engines are fitted with timing chains, which normally don’t have a specified replacement interval. Once fixed, they are not bad units. If you can hear a rattle which disappears after a couple seconds, it’s most likely the timing chain. We're also experts in ECU Repair and Replacement so when its time for a Performance Tune or ECU replacement, choose the Performance Experts. Rotating the engine backwards (counter clockwise) until the dial indicator stops moving c. Mercedes-Benz engine M256-turbocharged inline six-cylinder engine production in 2017, when it was first presented at the W222 in S450. Alternatively, you can buy the older S63 with the M156 as long as you can get a warranty that covers potential engine meltdown, or replace the head bolts preemptively. The new V8 was used in many expensive models of the German manufacturer in the 2000s, such as W211, W221, and X164. [5] Although it no longer corresponds with the engine displacement, all of the above models are still badged as "550". The hydraulic hoses deteriorate and have a finite lifespan (they can burst). Imagine that you’re trying to fix a rough idle or misfire. The M177 was the first variation[6] released in the Mercedes-AMG C63. The system is powered by a hydraulic pump, monitored by sensors and controlled using solenoid valves. Not all M272 and M273 engines made before 2009 are affected. In traditional Mercedes-Benz fashion, the W221 S-Class was available in short and long wheelbase versions in most markets. Also, watch out for worn camshafts. I recommend avoiding the S 63 AMG unless you are planning to do something about the head bolts that may corrode. The first two generations of CDI diesel engines may develop leaks from the fuel injector seals (copper washers). Quite simply a lot! When these engines first came out, some of them developed a timing chain rattle during a cold start. Initially released in the Mercedes-AMG GT and GT S, it had 345 and 375 kW (469 and 510 PS; 463 and 503 hp), respectively. You won’t find any coil springs in Citroen cars with hydro-pneumatic suspension, and when a nitrogen sphere fails, there is virtually no damping in a Citroen car.

(function(d, s, id) { Good for you, but don't buy anything untill watching this video. The other two are there to dampen pressure spikes in the system. There are four pressure accumulators that have a membrane inside and pressurized nitrogen gas behind it. [])). The Airmatic air suspension was standard equipment in the Mercedes-Benz W221 S-Class, except for the S 600 L and AMG models, which have the ABC hydro-pneumatic suspension. [8][9][10][11] In late 2019, the 48V system used in the M176 was added to the newly released models. Click on the buttons below to read more about the typical problems that fall outside the scope of routine maintenance. Each tune being individual to your specific vehicle. The V8 engine is the further development of the Mercedes-AMG M133 engine, two blocks sharing a single crankshaft. To illustrate, here’s a photograph of a bent connecting rod after hydrolock (not from a Mercedes-Benz): Mechanical engine damage is the worst case scenario, usually, the cars start losing coolant before failing like this. The rattling noise is a result of the chain tensioners not applying enough tension until oil pressure builds up (a couple seconds after cold start). The repair involves fitting non-return valves (check valves) into the oil passages that supply oil to the two affected timing chain tensioners. Even if you don’t drive the car, the nitrogen gas will eventually escape, just like air escapes from a seemingly airtight balloon. [2], Cylinder block alloy Cast aluminium, closed deck, Cylinder head alloy Cast aluminium, zirconium alloy, Variable valve timing Camshaft adjustment on both the inlet and outlet side, Displacement 3,982 cc (4.0 L; 243.0 cu in), Bore x stroke 83 mm × 92 mm (3.27 in × 3.62 in), Output 375 kW (510 PS; 503 hp) at 6,250 rpm [Output per litre 94.2 kW (128.1 PS; 126.3 hp)], Maximum torque 650 N⋅m (479 lb⋅ft) at 1750 – 4750 rpm [Torque per litre 163.2 N⋅m (120.4 lb⋅ft)], Air delivery Forced induction, 2x twin scroll turbochargers spinning to 186,000 rpm with electronically controlled blow-off valves, Fuel delivery Electronically controlled direct petrol injection with spray-guided combustion, fully variable, fuel pressure 100–200 bar (1,500–2,900 psi), Coolant delivery 3 phase thermostat, timing chain driven water pump rated 420 litres (110 US gal; 92 imp gal) /min flow, Oil delivery 9 litres (2.4 US gal; 2.0 imp gal) oil, dry-sump, via two-stage controlled suction pump (250 litres (66 US gal; 55 imp gal) /min), a pressure pump and a 12 litres (3.2 US gal; 2.6 imp gal) external oil tank, Oil cooling External engine oil cooler in the front, Charged air cooling Indirect air/water intercooling, cooling 140 °C (284 °F) charged air to 25 °C (77 °F) above outside temperature under full load, NEDC combined consumption Under 10 litres (2.6 US gal; 2.2 imp gal) /100 km (62 mi), Mercedes-Benz G 500 (G 550) and G 500 4×4²,, "In-Depth With the 2016 Mercedes-AMG GT's New V-8: So Long, Natural Aspiration—Hello, Twin Turbos! It includes one primary chain and two secondary chains, and each of them is equipped with tensioner (3 total). Coolant entering the combustion chamber can also cause increased smoking and a rough idle.

[1] However, the V8s are twin-turbocharged, with the BorgWarner turbochargers positioned between the two cylinder heads in a "hot-V" configuration. Driving with air leaks will prematurely kill the air pump because then it has to turn on more often to replace the escaping air. While major provider tunes are generally regarded as safe enough (no reports of catastrophic engines failures), it is unlikely that they provide better long-term reliability than the stock factory software. Air suspension is commonly used in trucks and buses because vehicles with air suspension can maintain correct height and level despite the load. Before buying a car with one of these engines, make sure there is no timing chain noise during a cold start and that the check-valves have been fitted (contact a Mercedes-Benz dealership). As always, if you have questions about this tune or tuning a Mercedes in general on any other model of Mercedes-Benz, feel free to reach out to one of our specialists. Humming or howling noise between idle and 2000 RPM means that the pulsation damper has failed. If a hose blows, the suspension shuts down. While I’m sure there are many different reasons that Mercedes decided to tune it this way, one of them is obvious. The first Mercedes-Benz models that had air suspension were the S-Class W220 in 2000 and later the E-Class W211. Ideally, get a post-2010 model with the updated seals. Here’s what the timing chain rattle sounds like: I don’t recommend buying the car if it hasn’t got the check valves and updated timing chain tensioners or if you encounter noise during a cold start. While it was an excellent feature added to some Mercedes-Benz models, but it was also prone to failure. Any ABC warning messages, appearing for a couple seconds when cornering, braking or after hitting a pothole, are bad signs. And what does gapping the spark plugs do, not so familiar with that part? Hopefully, most vehicles would have had the seals replaced by now.

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