Quote:
Originally Posted by Captkaos
That ain't the way to fix it... I just went through this and documented it here, I was baffled as there was several contributing factors (370K miles and it sat in a field for 2 years): http://forum.73-87chevytrucks.com/sm...p?topic=3984.0
Things to check.
A)Fuel pressure = must be 10-13lbs.
B)Injectors firing correctly = put a timing light on any plug and shine it toward the injectors (may need a dial-back to see) they should fire when the spark fires.
C)spray pattern of the injectors.
D)pull the IAC out (engine off) and see if it is gummed up? they can be cleaned.
Since someone monkeyed with the idle, I would run the screw back to where the blades are closed but resting on the stop, not the throttle bores.
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That was a good thread, I have an 82 C20 with an 87 TBI 350/700R4 in it that is doing the exact same thing. I needed some more ideas.