back 2 cylinders not firing on 1991 Isuzu Pickup

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

by in San Manuel, AZ on April 27, 2011
1 answer 1 comment
ANSWER by on April 27, 2011
Have you checked for fuel injector pulse. Use a noid light, and perform and injector leak down test to rule out injectors.
COMMENT by on April 28, 2011
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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