Engine misfire - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tbrown5079 · 01-07-2016, 10:02 PM

I've had my 4.8 running for a while now after solving a ground issue. I haven't had it on the street yet, but getting anxious. Sometimes when I start it to move it or just let it sit in the driveway and run for 10 or 15 minutes it will be running on 7 cylinders. If I take the plugs out and find the one that is misfiring and dry it, it will run on all 8 cylinders. It has been a different cylinder every time. I'm hoping when I get it on the street that will stop happening. Anyone else have this problem? Could the trouble be in the tune?

01-07-2016, 10:02 PM	#1
tbrown5079 Registered User Join Date: Feb 2007 Location: Blairsville, PA Posts: 301	Engine misfire I've had my 4.8 running for a while now after solving a ground issue. I haven't had it on the street yet, but getting anxious. Sometimes when I start it to move it or just let it sit in the driveway and run for 10 or 15 minutes it will be running on 7 cylinders. If I take the plugs out and find the one that is misfiring and dry it, it will run on all 8 cylinders. It has been a different cylinder every time. I'm hoping when I get it on the street that will stop happening. Anyone else have this problem? Could the trouble be in the tune? __________________ tbrown's 56 Cameo Build

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