What is the reason why the Great Wall Feng Jun can't turn at 5 2800?

The reasons why the Great Wall Feng Jun 5 2800 cannot be turned up are as follows:

1. There may be something wrong with the throttle. First check whether the throttle position sensor is normal, sometimes the fuel will tremble when it is lit.

2. It is also possible that the engine cylinder is out of the cylinder, and the spark plug ignition is not good, so the spark plug can be replaced;

3. There may be a problem with one of the oil circuit, oil pump and gasoline grille. This problem is probably caused by the addition of inferior gasoline.

4. If it is an automatic gearbox, there may be something wrong with the torque converter, so check it. If it is a dual clutch gearbox, there may be something wrong with the clutch and it needs to be checked, which will lead to the speed not going up.