H hollifieldrobert New member Jan 11, 2010 #2 detenation preignition (knockig sound rattling )under load or part throttle also buy running to lean you will end up with a mis fire 1or more cyclinders not working your engine will have to be rebuilt
detenation preignition (knockig sound rattling )under load or part throttle also buy running to lean you will end up with a mis fire 1or more cyclinders not working your engine will have to be rebuilt