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Fuel nozzle fault performance:
* Fuel hole is clogging.
*Poor sealing of the needle valve and the needle valve body, resulting in poor .tomization or oil leakage of the injector.
* Has air in the oil circuit.
* Poor oil supply.
* Insufficient spring force of the piston spring or spring break.
* Piston wear, which affects oil supply.
How to judge the injector is clogged or damaged?
* Engine noise is getting bigger, especially in low gear and below 2500 rpm
* The throttle response is not sensitive, the acceleration is not smooth, and the throttle will have obvious hysteresis.
* The idling range is small, especially when starting, the jitter is obvious, and it is not easy to eliminate. The 1st and 2nd gears have a slight lack of cylinder feel.
* Engine fault light is on