SPONSORED LINKS

1998 Chevy Truck Runs too rich

Tiny
TOMBAPTIST
  • MEMBER
  • 1998 CHEVROLET TRUCK
Engine Performance problem
1998 Chevy Truck V8 Two Wheel Drive Automatic

I replaced air filter, fuel injectors, plugs, wires, cap, rotor, and cooling temp sensor. And it still dumps too much fuel.
Monday, May 17th, 2010 AT 6:14 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
+2
Monday, May 17th, 2010 AT 9:30 PM

Please login or register to post a reply.

Related Engine Rich Content

Code Read Retrieval/Clear Chevrolet
VIDEO
Code Read Retrieval/Clear Chevrolet
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