Mercedes-Benz cla smells of engine oil after starting.

This may be caused by the following reasons:

1, it is common that the spark plug of the vehicle is aging or the ignition coil is damaged. You can go to the repair shop to remove the spark plug and check the gap of the spark plug. If the gap is too large or the wear is serious, the problem can be solved by replacing the spark plug. The inspection of the ignition coil requires a computer to read a specific fault code. If the corresponding cylinder is on fire, it is generally a problem with the ignition coil.

2. The engine has too much carbon deposit, which is caused. In this case, it is recommended to clean the engine carbon deposit, especially the carbon deposit in the throttle intake and cylinder. The carbon deposition in the cylinder is mainly the carbon deposition in the piston position and the valve seat position, and then the throttle valve is re-allocated.

3. It is necessary to check this phenomenon caused by the damage of waste gas valve.