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97 GMC Yukon Won't Start 5.7L V8
I swapped the wires and still is a problem with plug 3. I don't see any areas that look burned through on the cap but I ordered a new one and it should be here next Tuesday- nate70500
- Post #12
- Forum: Engine & Drivetrain
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97 GMC Yukon Won't Start 5.7L V8
and now I have to ask how you know its not the DCR820X? lol. I assumed mine was a DCR820X because thats the only one that I found that looked like it- nate70500
- Post #8
- Forum: Engine & Drivetrain
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97 GMC Yukon Won't Start 5.7L V8
I put new delco plugs in a couple weeks ago when it first stopped running. The coil is a factory coil, not high output. It was the cap that came with the distributor. Ill take a closer look at the distributor cap tomorrow when I check the wire- nate70500
- Post #7
- Forum: Engine & Drivetrain
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97 GMC Yukon Won't Start 5.7L V8
I'll give it a try tomorrow. Thanks- nate70500
- Post #5
- Forum: Engine & Drivetrain
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97 GMC Yukon Won't Start 5.7L V8
Just #3 kills it. If I do it with any other plug theres no difference- nate70500
- Post #3
- Forum: Engine & Drivetrain
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97 GMC Yukon Won't Start 5.7L V8
I recently got a 1997 GMC Yukon SLT 5.7L Vortec V8. It turns over but wont start. A small bit of white smoke comes out of the exhaust when I try starting it. If I unplug the boot from spark plug #3, the truck starts immediately. But if i reconnect the boot when the truck is running it shuts off...- nate70500
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- Replies: 13
- Forum: Engine & Drivetrain
