damn, i suppose your right. I just want to figue it out. I dont have a leakdown tester, or a decent compression tester to hook up to the air. I think im going to start with a pressure test of the radiator and try to find where it is going. I almost suspect combustion gasses coming it, because the level in the overflow goes up when warm, and drops when cold, but somewoh it doesnt seem to fill the whole radiator. I really dont know. The cap was also replaced. If i pull the sparkplugs out, will there be any telltale signs? Like completly white or something? thanks