刘师傅在试车后排除车主驾驶问题,将问题锁定在节气门上。节气门脏应该是造成该现象的主要问题:一般的电喷发动机在运行过程中,可燃气体在汽缸内燃烧产生的废气中,会有一小部分通过进气门,进气管道在节气门附近生成积炭。发动机熄火后,进气管中的机油蒸汽会冷凝成 Master Liu rule out the owners driving test after the test, the problem locked in the throttle. Throttle dirty should be the main problem causing this phenomenon: In the general EFI engine operation, combustible gas in the cylinder combustion exhaust gas generated, there will be a small part of the intake valve, the intake pipe near the throttle generated Carbon deposition. After the engine is turned off, the engine oil vapor in the intake pipe will condense