The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

Kudzupatch · 04-03-2019, 02:00 PM

One thing I never or very rarely see mentioned is a dirty injectors. I had a VAGUELY similar issue and about pulled my hair out. Then one day I noticed that the spray/cone of fuel coming from the injectors didn't match. One was obviously stronger than the other. It is hard to see so use a strong light. Hooked up the computer and took it for a drive and I could see the O2 sensor levels drop[ing way lean under a load. New injectors solved my issue.

May not be your issue but I it is easy to check.

04-03-2019, 02:00 PM	#5
Kudzupatch Registered User Join Date: Apr 2013 Location: GUNTERSVILLE Posts: 621	Re: TBI Idle/highway trouble One thing I never or very rarely see mentioned is a dirty injectors. I had a VAGUELY similar issue and about pulled my hair out. Then one day I noticed that the spray/cone of fuel coming from the injectors didn't match. One was obviously stronger than the other. It is hard to see so use a strong light. Hooked up the computer and took it for a drive and I could see the O2 sensor levels drop[ing way lean under a load. New injectors solved my issue. May not be your issue but I it is easy to check.