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1991 Isuzu Pickup Question: back 2 cylinders not firing



Twelve, 2.3L 4 Cylinder, San Manuel, AZ, April 27, 2011, 10:44

Just replaced head gasket and intake manifold gasket. All vacuum lines connected. New plug wires. Back 2 cylinders not firing. Timing set properly.

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  • Answer #1

    Visitor, April 27, 2011, 10:51

    Have you checked for fuel injector pulse. Use a noid light, and perform and injector leak down test to rule out injectors.

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    Twelve, April 28, 2011, 09:03

    Thanks for the response but my ole truck is carburated. One thing I thought of is I didn't use any gasket sealer on the intake manifold gasket. So I'm gonna go back and do that and I'll see if that may be it. Re- adjusted all the valves, too.

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