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Old 10-22-2008, 09:11 PM   #71
nickmac
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Join Date: Oct 2008
Location: Scandia, PA
Age: 35
Posts: 24
Re: 1991 chevy 1500 5.7 tbi erratic idle

On your 91 there is a wire to disconnect to set the timing. It should be behind the plastic on the passenger side of the firewall. The return line being kinked could be letting it run rich because not enough fuel is getting back to the tank.
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Dan

'91 5.7 4x4 Chevy
'05 4.2 4x4 Trailblazer
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