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1.发动机着火时,松开某缸高压油管,若排气管内的“啪啪”着火响声或冒烟现象消失,则表明该缸喷油嘴卡死在开启位置;若发动机的运转情况不发生变化,则表明该缸喷油嘴不喷油,针阀卡死在关闭位置。2.发动机静止状态时,摇车供油,听诊喷油嘴。若无清脆的“哒哒”啧油声,则表明喷油嘴针阀卡死在关闭位置;若有微弱的“嗤嗤”喷油声,则表明喷油嘴针阀卡死在开启位置。
1. Engine ignition, release a cylinder of high pressure tubing, if the exhaust pipe “flapping” fire or smoke disappears, it indicates that the cylinder nozzle stuck in the open position; if the engine operation Does not change, then the cylinder nozzle is not injected, the needle stuck in the closed position. 2 engine stationary, the car fueling, auscultation nozzle. If there is no crisp “da da ” tut oil sound, it shows that the needle valve needle stuck in the closed position; if there is a weak “Chi Chi” injection sound, indicating that the needle valve needle stuck In the open position.