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engine backfire through exhaust

engine backfires through the exhaust when shut off have replaces pick up and module in distributor cap rotor wires and plugs even replaced muffler
  • Posted 2 Feb 2018 09:41
  • By dr4328
  • joined 23 Nov'17 - 4 messages
  • Mississippi, United States
CJ
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Was the head milled?
  • Posted 6 Feb 2018 09:06
  • By BREWSKI
  • joined 10 Jan'12 - 1,698 messages
  • Nebraska, United States
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head has been off and had a valve job
  • Posted 6 Feb 2018 08:54
  • By dr4328
  • joined 23 Nov'17 - 4 messages
  • Mississippi, United States
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Try cleaning the head using sea foam or an equivalent product. Sounds like you have carbon build up in the valve train. You can also use plain water in a spray bottle.
  • Posted 3 Feb 2018 00:30
  • By BREWSKI
  • joined 10 Jan'12 - 1,698 messages
  • Nebraska, United States
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