Will not start

  • 1 POST
  • 164,000 MILES

Car wont start it will turn over but wont start. I have replaced crank and cam sensor, fuel filter, also had coil tested, its fine, Im not getting fire from coil though, im not really sure of what else to do, im kinda stranded 400 miles from home and trying to get this problem fixed before my off days come up so that I will be able to go back home, thank you very much for your time.

Do you
have the same problem?
Monday, May 6th, 2013 AT 12:06 PM

1 Reply

  • 21,042 POSTS

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.

Was this
Monday, May 6th, 2013 AT 12:45 PM

Please login or register to post a reply.

Recommended Guides