have a Vortec 350 replace oxygen sensor spark plug wires still have a miss

Asked by Aug 07, 2017 at 01:52 PM about the 1998 Chevrolet C/K 1500

Question type: Maintenance & Repair

my 350 not fuel injected and it has
a miss plug firing oxygen sensors
good don't know what else to
check any ideals

4 Answers

22,255

"Not fuel injected" are you sure? The vortec 350 has a couple problem areas that cause this: vacuum leaks, distributor cap and rotor, sometimes the Spider injector. Unless you have done some modification your truck is fuel injected.

I'm going to check those things out it's not fuel injected how do I check for the vacuum leak

22,255

I was trying to say it in a polite way but your not getting it. Your truck is fuel injected. If it's really not fuel injected then try rebuilding the carburator

there is a spider injector under the intake manifold you can't visibly see.

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