V Klasse engine knocking and power loss

The symptoms you describe reduced engine power jerking acceleration smoke and stored error codes are indeed indicative of potential engine knock especially in a gasoline engine with that mileage I had a similar issue with my V Klasse although I cannot guarantee the precise cause will be identical Deposits in the combustion chamber are a plausible explanation This alters the compression ratio and promotes uncontrolled combustion Have you considered the possibility of carbon buildup affecting the engine's performance Have you had the fuel injectors checked or cleaned

Carbon buildup eh That sounds messy I haven't checked the fuel injectors specifically What does fuel injector cleaning involve and could that really be the source of all this chaos What does it mean uncontrolled combustion I really would like to avoid extensive work on the cylinder heads

Uncontrolled combustion means the fuel-air mixture is igniting prematurely or unevenly leading to the knocking sound and potential engine damage Fuel injector cleaning involves removing deposits that obstruct the spray pattern Dirty injectors can disrupt the fuel-air mixture exacerbating the problem While I am not a mechanic I highly recommend taking your vehicle to a workshop for a thorough diagnostic check Considering the symptoms and error codes it is essential to identify the root cause accurately before proceeding with any repairs It cost me around 425€ in the end

Thanks a million for the insight Dropped it off at the shop and you were spot on combustion chamber deposits were the main culprit They cleaned it all out did the fuel injectors and she runs like a dream now The error is gone I appreciate the advice