Mercedes-Benz C240 acceleration issue with oil leaking on spark plugs after replacing mass air flow sensor and coils on Mercedes-Benz C240

Some Mercedes-Benz C240 owners report experiencing acceleration issues potentially caused by oil leaking onto the spark plugs after replacing the mass air flow sensor and coils. These owners have identified common causes of engine oil leaks, such as faulty seals and degraded gaskets, which could lead to oil seeping onto the manifold and producing smoke and a burnt rubber smell. Additionally, some owners suggest that it may be possible to rectify oil leaks themselves by locating sources like a leaking oil pan gasket, particularly in older C-Class models. Furthermore, acceleration problems may also stem from fuel system issues, including a defective fuel pump or leaking transmission fluid. Proper terminology when replacing components, such as the mass air flow sensor, is crucial for accurate diagnosis and resolution of these issues. Therefore, it is recommended that owners inspect the oil and fuel system components and ensure correct installation of replaced parts to effectively address the acceleration problems.