Re: Vapor lock poll

Posted by Tim Cole On 2011/3/13 10:40:57

This reply is for Bob51:

I was dealing with a Clipper that did the same thing. It would just die without warning and then restart. There was so much worn out on the car that I just scratched my head looking at it. Everytime it quit it wouldn't stay broken long enough to isolate a problem. I've had two modern Dodges that would do the same thing when not fully warm on rainy days. I solved that problem by setting the fast idle up.

Given your car stays broken I would try to isolate the system first. You need three tools: A spark tester, a vacuum gauge and a jumper wire, and a can of ether.

When it quits and won't restart first check the ignition using the spark tester.

If it has spark try a modest breath of either. If the motor kicks then you probably have a fuel problem. Confirm by removing the air cleaner and pumping the accelerator. You should be flooding the motor with fuel.

If both tests don't produce, then check the motor cranking vacuum. Use the jumper wire to bypass the throttle switch. You should have some cranking vacuum. If not then perform a compression test when the motor is hot.

I have seen these problems with leaking fuel pump check valves, worn out ignition switches, bad grounds, air leaks in fuel lines, etc, etc.

Don't underestimate the value of good battery cables. They are pricey to have made but are well worth the money because they save your starter motor as well.

Good Luck