发动机起动困难(或不能起动)故障有两种:一种是在常温下冷机起动困难;另一种是发动机熄火后热机起动困难。造成起动困难故障的原因一般为起动系有故障或油、电、气和冷却液等方面有故障,归纳起来有四种情况:有油无火,有 Engine start difficult (or can not start) There are two kinds of faults: one is cold start at room temperature difficult; the other is the engine after the heat engine start difficult. The cause of difficult start-up failure is usually the starting system is faulty or oil, electricity, gas and coolant failure, there are four cases: there is no oil, there is no fire, there