The rotation speed of Dl250 is high after ignition.

The reasons for the high rotational speed of dl250 after ignition are:

1, engine carbon deposit is serious.

2. The throttle valve is dirty or the fuel injector has carbon deposit.

3. The failure of spark plug, high voltage line and ignition coil causes the ignition system to work badly.

4. The oil pressure is unstable, the oil supply pressure of the oil pump is insufficient or the value of the intake pressure sensor is wrong.

5. The oil circuit is blocked due to insufficient oil supply.

6, engine parts aging.