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故障128故障现象:一辆春风125T-3摩托车,在行驶途中发动机自行熄火后不能起动。反复检查,但故障未能排除。故障诊断与检修:试起动发动机,发动机不能起动。在高压线端进行跳火试验,蓝白色的高压电火花可以跳过8 mm的空气间隙,并发出“啪,啪”声响,表明高压电火花强烈。火花塞跳火试验,电极间跳火良好,但火花塞裙部与电极表面干燥没有燃油痕迹,表明油未进入缸内。用手指堵住火花塞孔,起动发动机,手指即被压缩气体顶离火花塞孔,
Failure 128 Symptom: A spring breeze 125T-3 motorcycle, on the way to stop the engine can not be started after their own flameout. Check repeatedly, but the failure can not be ruled out. Troubleshooting and maintenance: try to start the engine, the engine can not start. In the high-voltage line side of the flashover test, blue and white high-voltage spark can skip the air gap of 8 mm, and issued “snap, snap ” sound, indicating that high-voltage spark strong. Spark plug sparking test, sparks between the electrodes is good, but the spark plug skirt and electrode surface dry without fuel traces, indicating that the oil did not enter the cylinder. Plug the spark plug hole with your fingers, start the engine, the fingers are compressed gas from the spark plug hole,