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Re: 94 K1500 4.3 running rich
What is engine vacuum reading at idle and at 2K rpm?
Good hot spark to all plugs?
Dist and dist shaft good?
Pickup module and dist pickup coil good?
cap and rotor and wires good?
Give the pcm the old tap/wiggle/twist test.
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Remember proper testing gives us the answer to many problems.
MT
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