BACK FIRE

  • Tiny
  • bighand
  • 1989 Jeep Wagoneer
  • 6 CYL
  • 4WD
  • automatic

Below 2000 RPM it back fires and cuts out

Saturday, February 19th, 2011 AT 6:08 PM

4 Answers

  • Tiny
  • bighand
  • Member

I have no replies

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Saturday, February 19th, 2011 AT 8:18 PM
  • Tiny
  • rasmataz
  • Member

http://www.2carpros.com/articles/what-is-an-engine-backfire

Common causes of backfires are:

Poor or unregulated engine timing is often a cause of intake backfires, but can also be responsible for exhaust backfires
Improper wiring in the ignition can also lead to timing issues and backfires
Low fuel pressure, clogged fuel filters, and weak fuel pumps could cause a severe lean air-to-fuel ratio during fuel injection
Missing or damaged catalytic converter can result in backfires out the tailpipe
Air injection problem/diverter valve/check valve

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Saturday, February 19th, 2011 AT 10:03 PM
  • Tiny
  • bighand
  • Member

It only below 2000 RPM and in revser

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Sunday, February 20th, 2011 AT 12:09 AM
  • Tiny
  • rasmataz
  • Member

Check the fuel pressure with a fuel pressure gauge and comeback with the readings

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Wednesday, February 23rd, 2011 AT 9:53 PM

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