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The Rodding Roundtable

Motorhead Message Central => Rodder's Roundtable => Topic started by: 348tripower on November 02, 2010, 10:21:07 PM

Title: 4.3 gm V6 races at high RPm after intake gasket change
Post by: 348tripower on November 02, 2010, 10:21:07 PM
I looked at this tonight. Can't find anything wrong. The throttle body doesn't even open up and it is on high Rpm. 1999 S10. Everything looks to be hooked up. Where is it getting the air at to run? :shock:
Title: 4.3 gm V6 races at high RPm after intake gasket change
Post by: chimp koose on November 03, 2010, 01:21:35 AM
vacuum line to power brakes would be the largest line off the manifold. It has to be getting air from somewhere.
Title: 4.3 gm V6 races at high RPm after intake gasket change
Post by: taxpyer on November 03, 2010, 01:29:06 AM
Timing? :shock:
Title: 4.3 gm V6 races at high RPm after intake gasket change
Post by: rooster on November 03, 2010, 10:59:56 AM
EGR stuck open! IAT sensor hooked up!  Carb cleaner in the intake?? How about any codes set.
Just some guess's.
Title: 4.3 gm V6 races at high RPm after intake gasket change
Post by: enjenjo on November 03, 2010, 11:00:59 AM
My guess is a gasket leaking under the intake manifold. The other alternative is a problem with the idle air control.
Title: 4.3 gm V6 races at high RPm after intake gasket change
Post by: 348tripower on November 03, 2010, 11:35:30 AM
Quote from: "enjenjo"My guess is a gasket leaking under the intake manifold. The other alternative is a problem with the idle air control.


It was late when I looked a this. I suggested pulling the intake again. Looks to me that with the elongated holes in the gaskets they could slip down and the bolts would go in over the top of them. I willl stop tonight and see what is up.
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