James Smith
October 26, 2020
Car engine idling speed is lower than or beyond the prescribed range, causing engine flameout intermittently, unstable idling speed and other symptoms. 1. How to deal with unstable idling speed The symptoms of unstable idling speed: the engine is shaking and the idling speed is unstable while idling. The causes are as follows: idle air valve is clogged, it can not work. Well, some spark plugs is too weak, individual valve sealing is poor, intake manifold leakage, ignition timing is too early or too late, improper adjustment of idle, etc. When the engine idle speed is not stable, first of all, should adjust the idle speed, such as the fault still cannot be eliminated after the idle speed adjustment, should check the idle speed and idle air volume hole is blocked, such as the volume hole is blocked, can be cleaned with gasoline or acetone and compressed air blow through; If the measuring hole is not blocked, the engine speed should be stable at a certain speed, check the intake manifold or carburetor, the lower gasket is whether there is leakage, such as leakage phenomenon, can be used to tighten screws or add, reduce gasket method to eliminate. If the idle speed is unstable and accompanied by the phenomenon of engine power decline, it should further check the spark plug work, valve sealing performance and ignition time is correct, if necessary, should be repaired, adjusted.
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