1990 k3500 spits and cuts out at 3500 rpm

Asked by Jonathan Aug 05, 2020 at 10:52 PM about the 1990 Chevrolet C/K 3500 Extended Cab LB 4WD

Question type: Maintenance & Repair

I have a 1990 Chevy K 3500 I converted it over to
carbureted whenever you rev the engine up right at 3500 it
starts cutting out spitting and sputtering any ideas it has a
mild cam

2 Answers
50

Brad answered 3 years ago

You may have a timing issue, The computer is missing several signals, Mass air sensor or fuel preassure are another possibility as I don't know how complete your conversion was. First suggestion would be a fuel filter.

Mark helpful

Jonathan answered 3 years ago

Computer is complete bypassed and running a 600 holly with 5.5 psi fuel running to it

Mark helpful

Your Answer:

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