BACK FIRE

1989 Jeep Wagoneer

Tiny

bighand

February, 19, 2011 AT 6:08 PM

Below 2000 RPM it back fires and cuts out

FOUND 1244 RELATED QUESTIONS

4 Answers

Tiny

bighand

February, 19, 2011 AT 8:18 PM

I have no replies

Tiny

rasmataz

February, 19, 2011 AT 10:03 PM

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

Tiny

bighand

February, 20, 2011 AT 12:09 AM

It only below 2000 RPM and in revser

Tiny

rasmataz

February, 23, 2011 AT 9:53 PM

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

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