THIS MAY BE A SILLY QUESTION BUT CAN THE TIMING...

  • Tiny
  • Anonymous
  • 2001 Hyundai Coupe
  • 11,700 miles

Hi this may be a silly question but can the timing belt jump a tooth or two causing the spark plugs to stop sparking but still turn over just wont fire up thanks

Monday, January 7th, 2013 AT 7:44 PM

4 Answers

  • Tiny
  • Wrenchtech
  • Expert
  • 19,584 posts

It won't effect the spark unless the crank sensor got damaged by the belt. It will effect the compression though.

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Monday, January 7th, 2013 AT 7:49 PM
  • Tiny
  • jaydean
  • Member

Ok the problem was/is that car was running great no fault or hint of one then it just cut out try to start it but no gone got it towed home and found it had stopped sparking

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Monday, January 7th, 2013 AT 7:53 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 19,584 posts

Here is the rest of the testing you need to do.

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.

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

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Monday, January 7th, 2013 AT 8:04 PM
  • Tiny
  • jaydean
  • Member

Thanks sorry for sounding stupid will check at weekend thanks jay

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Monday, January 7th, 2013 AT 8:09 PM

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