哈哈,比较罕见的业余失误,分享一下,希望对其他业余选手都有所提示。
前一段换02烤肉的intake gasket,hood下边大拆一通,然后安装回去,结果车发动不起来了。
于是乎,检查电,打火,油路,都没有问题。考虑自己的业余级别,于是研究检查低级错误。最终发现是intake那根最粗的皮管道没有完全安装好,造成罕见的巨大vacuum leak。
红线标注的是intake hose。绿色箭头指示的,是我没有安装到位的,连接throttle的一头。因为那里位置比较低,周围小管道多,比较挤,所以起先把橡皮管道插到throttle上随便了些。从上边看是插到底了,但是下边没有完全插到头,大黑橡皮管子,实际是以一个斜面连接在throttle上,造成下边一个大裂缝开口。
这次因为把电池和intake box都拆了,所以空间非常大,检查和再安装就很明朗简单了。
现在车又活了,等待check engine light,继续测试中。
感谢 bushihandyman 对vacuum leak 的提醒。也感谢 motorcycle 让俺又学习了一招诊断方法,不过这次没用上,先还给你哈
抄一段网上学习的心得:
”Even if there's fuel and it is being delivered to the engine, a massive vacuum leak could be preventing the engine from starting. A large enough vacuum leak will lean out the air/fuel ratio to such an extent that the mixture won't ignite.
An EGR valve that's stuck wide open, a disconnected PCV hose, loose vacuum hose for the power brake booster, or similar leak could be the culprit. Check all vacuum connections and listen for unusual sucking noises while cranking. “