1986 Having fuel issues...

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May 12, 2011 | 11:04 AM

#31

BPofMD

FTE Legend

Joined: Jul 2005

Posts: 65,938

Likes: 1,432

From: Millersville, MD

Charlie sends his best....and wondering if anyone has any more info on this? Has anyone thought about bad/dirty injectors?

May 21, 2011 | 07:59 PM

#32

dustybumpers

FTE Legend

Joined: May 2008

Posts: 56,542

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From: In my own world

~~~~~~Update~~~~~~~~

The 89 truck is repaired. winds up being the mechanical fuel transfer switch. that's the big can in the frame with all the lines hooked to it.

Jul 31, 2011 | 08:56 PM

#33

heebegb

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Joined: May 2011

Posts: 1

Likes: 0

I have the same truck with the same problem. I replaced both fuel pumps, filters, pressure regulator, map sensor, TPS, oxygen sensor. Nothing fixed the problem. I finally decided I would study the chiltons manual, just replacing parts without knowing can get expensive real quick. The problem finally turned out to be the dual function reservoir. There is any easy test described in the manual, to see if thats the problem. Mine failed the test. Runs great now. I took the valve apart after I ordered the new one, and sure enough some of the o rings in the valve had come apart.