BACKFIRES

  • Tiny
  • pamwalt1
  • 1993 GMC Safari
  • 6 CYL
  • 200,000 miles

1993 gmc van backfires on start up run poor till warm up

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Monday, February 21st, 2011 AT 2:11 PM

3 Replies

  • Tiny
  • mmprince4000
  • Expert
  • 8,715 posts

Do you have a check engine light? If so get codes read and post to this thread.

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Monday, February 21st, 2011 AT 2:14 PM
  • Tiny
  • pamwalt1
  • Member

No the check engine light not on had it on computer showed nothing thought water in gas added dry gas ran good 3day filled new gas stsrted to backfire again

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Monday, February 21st, 2011 AT 2:30 PM
  • Tiny
  • mmprince4000
  • Expert
  • 8,715 posts

Backfire is a timing issue, either dist. Or a valve hanging open.

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Monday, February 21st, 2011 AT 6:20 PM

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