What causes noise in the Mercedes-Benz G-Class engine?

1 Answers
SanClara
08/31/25 7:52am
There are two fundamental reasons for excessive engine noise: excessive engine carbon buildup, and the use of inappropriate or dirty engine oil. Engine faults: Loose screws on the engine underguard. Aging engine mounting pads. Loose plastic parts in the engine compartment. Abnormal noise from the engine belt, including the power steering belt and alternator belt. Belt aging or improper tension (too loose or too tight) can cause abnormal noise. Engine knocking. Fault solutions: Loose screws on the engine underguard: Tighten or adjust the screws. Aging engine mounting pads: The mounting pads support the engine and must be replaced if aged. Loose plastic parts in the engine compartment: Such as the engine cover or intake pipe—tighten them. Abnormal noise from the engine belt: Including the power steering belt and alternator belt—replace or adjust the tension if the belt is aged or improperly tensioned. Engine knocking: Caused by excessive carbon buildup inside the engine or the use of substandard fuel. Clean the carbon deposits and replace the fuel.
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