99 silverado Misfires
#1
99 silverado Misfires
I have replaced all the plugs with performance plugs and ran fuel injector cleaner through it. Any ideas what could be next? My thoughts are banking on a bad injector, or possibly bad plugwire or coil? I have also heard of a "Knock sensor" which another guy I know of was having problems with, as his plug in one cylinder would be burnt to a crisp within a week of replacement. One thing I did do was run STP Octane through the motor as it said on the label "Reduces engine knock" and it did seem to run alot more smooth.
#6
I would start with the new plug wires and if that doesn't fix it get a compression check on all the cylinders done and a fuel pressure check. Does the miss go away when you give it gas?
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