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Old 12-16-2008, 08:20 PM   #127
bowtiejack
all throttle no bottle
 
Join Date: Apr 2007
Location: philadelphia
Age: 45
Posts: 213
Re: 1991 chevy 1500 5.7 tbi erratic idle

before you go just switching intakes , get it up to temperature and spray some carb cleaner along the rails( where intake mates to the heads)and see if the idle stumbles and increases . to replace the intake- three-five hour job . buy a chiltons book . three points. get a decent torque wrench and do a 2 step torque in the right sequence. make sure the intake side rails have the block out plate at the passenger side rear . lastly use a heavy bead of black rtv at the ends instead of the paPER gaskets . and hey, do a real good oil drain and fill after cause when you first lift the intake water will mix with the oil .
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1992 K2500 w/ reworked 355 - for fun
2003 2500HD utility - for work
2005 Denali tahoe- for the bride
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