1997 GMC Yukon Won't start

Tiny
ONEBOB123
  • 1997 GMC YUKON

Engine Mechanical problem
1997 GMC Yukon V8 Four Wheel Drive Automatic 160000 miles

When I turn it over the engine will turn over but will not start and when I let off the key from trying to start it it makes a clunk noise. I have had the starter rebuilt.

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Friday, January 8th, 2010 AT 10:20 AM

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Tiny
JDL
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  • 16,283 POSTS

Welcome to the forum, if it cranks good but won't start, have a helper crank it, while you check for spark at the plugs. If you have spark everywhere, use a gage and check fuel pressure. Some of the national brand autostores used to loan fuel pressure gage. You can call and ask. They also have a spark tester. You pull a spark plug boot loose, stick tester in boot, a known good spark plug will work also. You ground tester or plug to metal part of engine, watch for spark as the engine is cranked.

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Friday, January 8th, 2010 AT 10:38 AM

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