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Re: 91 Chevy PU, 4.3L, MAP
Posted to Technical Discussion Forum on 7/25/2000 1 Reply

Hi Daniel,

Before "throwing" parts at it, go through ALL the basics.

Good compression?

Manifold vacuum at idle = ?

Vacuum leaks?

TBI base gasket leaking?

Timing?

PCV OK?

EGR stuck on?

Alternator and diodes OK?

Don't assume that the other sh... Login to read more.

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