Originally Posted by slikmo22
I was driving for a while on 3 cylenders before it started to make that noise, about 30-45 mins. So you think its a spark plug? or the injector?
It's just a theory, and not your injector, just a fouled plug. It just seems odd to me that it would happen immediately after you've driven on 3-cylinders for some distance. Just check the plug, otherwise I'm guessing valves, but that doesn't make any sense really.