巧断三轮农用运输车启动难的故障原因发动机启动困难是一种常见的故障，为了尽快找出其故障原因，以便排除，通常可按下列情况，“对号入座”，查找原因：（１）热车点火启动。若发动机热车启动还需多次点明火，可断定这台车的发动机技术状况已严重恶化。如：①喷油泵供油... Qiao broken three wheeled agricultural vehicles difficult to start the cause of the difficulty of starting the engine is a common fault, in order to find out the cause of the malfunction as soon as possible in order to rule out, usually according to the following circumstances, “condemnation” to find out the reasons: (1) hot Car ignition start. If the engine hot car starts but also need to open fire many times, can determine the car’s engine technology has deteriorated. Such as: fuel injection pump ...