1995 Pontiac Firebird missfire and rich fuel mixture

Tiny
LIMO1644
  • MEMBER
  • 1995 PONTIAC FIREBIRD
  • V8
  • 2WD
  • MANUAL
  • 102,000 MILES
My transam is running rich and feels like it's not running on all 8 cylinders.
Saturday, May 22nd, 2010 AT 11:08 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hi limo1644, Welcome to 2carpros and TY for the donation

Probable causes of an engine running rich are as follows:

1. Fuel pressure not within specs. Can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, May 22nd, 2010 AT 11:42 AM

Please login or register to post a reply.

Related Engine Rich Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
Engine Running Rich
GUIDE
Engine Running Rich
This guide was created to show you what can cause an automotive engine to have a rich fuel mixture, which may cause black smoke to be released form the exhaust tail pipe as...
VIEW MORE

Sponsored links