问：有时不会开始。

间歇性没有曲柄条件，您很可能在初级起始电路中有不良的连接。这是电池，正面和负面电池电缆和起动机。即使您替换了起动器，新的或再制造的起动器也可能很糟糕。在这种情况下，我会怀疑在正或负电缆上存在不良联系。请记住，仅仅因为电线正在触摸，这并不意味着它与电力有很好的联系。连接必须紧密干净。如果表面和其他腐蚀都会使电流很难流动。在电路中测试不良连接的最准确方法是进行电压下降测试。我在这里无法解释的电压下降测试。需要证明它可以理解。下一个方法是禁用点火系统并启动电动机约30秒，然后感觉到热量的正和负电缆连接。 A high resistance connection will get hot to the touch. If this works, disassemble the connection and clean it with sand paper.

High resistance can occur in any part of the primary and secondary starting system. If you car so inclined, you can use a test light to find where the power stops when the car won’t crank. This requires a wiring diagram, careful study of the diagram and a test light. Testing in this way will need to be done when the failure is occurring.

如果您需要帮助，我建议您通过合格的技术人员看一下您的汽车diagnose your starting issue。Keep in mind, the only way to diagnose this is if the failure is consistent. If a technician shows up but the car is starting normally, there is no way of being sure what is wrong. Our mechanic maybe able to make some recommendations based on what he sees, but that is up to the mechanics discretion.

Good luck!