What is the reason for the insufficient refueling power of Datong V80 passenger car?

Cause analysis of insufficient motivation:?

The main reasons are incorrect ignition advance angle, low fuel pressure, air leakage in intake system, fault of throttle position sensor or air flow meter, poor operation of injector and EGR system.

The most likely failure of engine power decline is spark plug failure. When the spark plug is turned off or caught fire, the combustible mixture entering the engine cylinder can't burn completely, or even can't burn, which will lead to the poor operation of individual cylinders or all cylinders of the engine, and then lead to the decline of automobile power.

Then, when the spark plug fails, how to judge? First, remove the spark plug after the vehicle cools down, then reconnect the spark plug with the high-voltage line, and finally start the vehicle, and conduct the spark plug flashover test with the spark plug side electrode facing the metal part of the cylinder for 4-6mm.

If the spark color is blue or white, the spark plug works well; if the spark color is red, the spark plug is weak; if there is no spark in the spark plug gap, the spark plug is damaged.