WHILE DRIVING HOME FROM WORK YESTERDAY THE CAR ...

1988 Plymouth Reliant

Tiny

Andrea Holyfield

March, 23, 2013 AT 10:34 PM

While driving home from work yesterday, the car just stopped working. The engine turns over but will not start. Have checked the fuel pump and changed the ignition coil and pick-up. Any help would be greatly appreciated.

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5 Answers

Tiny

Wrenchtech

March, 23, 2013 AT 10:38 PM

All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.

Tiny

cadieman

March, 23, 2013 AT 10:40 PM

Youwill need to check for spark at the spark plug wires. If it's okay then try starting fluid in the throttle body.

Tiny

Andrea Holyfield

March, 23, 2013 AT 11:34 PM

Thanks! We have tried all these. Will keep on trying.

Tiny

Andrea Holyfield

March, 23, 2013 AT 11:34 PM

Thanks! We have tried all these. Will keep on trying.

Tiny

Wrenchtech

March, 23, 2013 AT 11:49 PM

I didn't give you things to try. I gave you a systematic way to find the problem. Believe me, it won't pass all those tests. It would be running if it did.

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