Could be a loose ground wire or wire crossfiring.If the shop doesn't figure it out I'll try it. They're brand new though. They were replaced two weeks ago when all the issues first started. Thanks!
Wow, moron mechanic. I had an oil change done at my Isuzu dealer, they forgot to put the cap back on the valve pan cover. Drove it to a job and started it up, ran fine for a couple minutes till it warmed up. Sprayed oil on the manifold, started to smoke pretty good, thought it was on fire. Called the dealership to get a cap and some oil. The mechanic that brought it over said that this happens more than you would think.Got the Chevy back today and it’s finally running good again. When the first shop put the wires in they used pliers and tore the insulation on most the wires. They used some silicone to try and patch one of them. Also the #8 wire was barely attached to the plug which was the spark I was hearing during the misfires. Got some new wires and the idle is back to normal.
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