Abnormal noise of BMW n20 engine

There are several reasons for abnormal noise of BMW n20 engine:

1. The engine has serious carbon deposition; 2. Ignition system problems; 3. The oil pressure is unstable; 3. Aging of engine parts, etc.

Detailed introduction of abnormal noise of BMW n20 engine;

1. The engine has serious carbon deposition.

The most common reason for car jitter is that the throttle is too dirty or the nozzle has too much carbon.

Solution: clean the oil circuit, check whether there is carbon deposit in the idle motor, and clean it all winter.

2. Ignition system problem

Check the working conditions of spark plugs, high-voltage lines and ignition coils. Poor ignition system and poor ignition conditions of spark plugs can also lead to such failures.

Solution: Check the spark plug for excessive carbon deposition and replace the spark plug.

3. The oil pressure is unstable

If the engine carbon deposit has been cleaned, the throttle valve has been cleaned, the fuel pad and spark plug have been replaced, and the car body is shaking at idle speed, it is recommended that you go to the 4s shop to check whether the fuel supply pressure and intake pressure sensors are normal. If the oil pump oil supply pressure is abnormal or the intake pressure sensor value is wrong, it will not work normally and the body will shake.

Solution: Check the oil pressure and replace parts if necessary.

3. Aging of engine parts

Car jitter is also related to the aging of engine feet (also known as claw pads). The engine foot is actually the shock-proof system of the engine, which is responsible for absorbing the slight vibration when the engine is running. If there is something wrong with the engine foot, these vibrations will be transmitted to the steering wheel and cab, causing idle vibration. Solution: Replace parts.