1991 Chevy Camaro Burning rich,missing

1991 CHEVROLET CAMARO
93,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
MIKERP
  • MEMBER
  • 2 POSTS
350 eng TPI.The car sits a lot.Started this last time,battery dead,wouldnt charge,replaced battery.It misses really bad after warm up.Smells bad.done complete tune up.Replaced vaccum hoses that looked dry rotted.Replaced distributer,pick up looked rusted,didn,t help.cleaned IAC,it was really dirty,no change.replaced MAP,no change.Timing is moveing from 0 to of timing mark at times.Had Cats checked ,the shop said they are open.9/28 sent this question.rasmataz recommened clean IAC.It was dirty for sure.computer maybe?
Oct 9, 2010 at 1:07 PM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
1991 Chevy Camaro Burning rich,missing

Probable causes of an engine running rich are as follows:

1.Excessive fuel pressure can be cause by restricted fuel return line or defective fuel pressure regulator.
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
Oct 9, 2010 at 8:34 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle