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1991 GMC Jimmy Idling problems

Tiny
RUNASM64
  • MEMBER
  • 1991 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Is there something that goes with the fuel injectors that makes it run rough? I have ruled out ignition problems. Should I replace the injectors? It is a V6.
Thank you
Saturday, March 20th, 2010 AT 8:33 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, thanks for the donation. I have to start with the basic questions. How long since a tune-up? Did you use a gage and check fuel pressure? Are there any applicable trouble codes? If you have TBI fuel injection, does the injector/s spray patterns look the same? When you say, run rough, are you talking about Idle? If so maybe idle air system?

Compression good on all cylinders?
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Saturday, March 20th, 2010 AT 10:10 AM

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