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1.火花塞不跳火的原因(1)火花塞间隙调整不当间隙太小,不仅限制了火花与混合气的接触面积,而且由于电极的“消焰”作用,抑制火焰核的成长,尽管跳了火,但火花微弱,混合气着火困难。间隙过大,需要跳火的电压增大,使点火线圈处在过负荷状态下工作,并在高速时出现断火。间隙过大是由电极被烧蚀而引起的。(2)火花塞电极表面积油这是由于混合气过浓或润滑油太多所致;还由于经常长时间启动,或曲轴箱机油过多,或活塞环磨损,致使电极间有油污或油滴。
1. spark plug does not cause the jump (1) improper spark gap adjustment gap is too small, not only limits the contact area of spark and gas mixture, but also because of the electrode “flame” effect, inhibit the growth of flame nuclei, despite the jump of the fire , But the spark is weak, the mixture of fire difficult. The gap is too large, need to flash over the voltage increases, so that the ignition coil in the overload condition, and at high speed off the fire. The gap is too large is caused by the electrode is ablated. (2) spark plug electrode surface area of oil is due to the mixture is too thick or too much oil; but also because often long time to start, or excessive crankcase oil, or piston ring wear, resulting in oil or oil droplets between the electrodes.