Engine Performance problem
1995 Other Pontiac Models Two Wheel Drive Automatic
The plugs on the drivers side have tons of carbon on them. I just changed them yesterday, drove it 10 miles, now it doesn't want to run, it's back firing and has no power. Can you help me. I checked the compression in the engine. It threw the plug out at me along with along of black stuff. It was running fine I don't know what happened.