So I fnished putting back my GE after replacing the head gasket... The car was sitting for atleast 6 months... Anyways... so I'm driving it around the block for a few minutes... and I see a little bit of smoke coming out of the shifter area... I pull over in my house the exhaust manifold is red hot. I've never seen anything like that. So the question is: What would make my exchaust manifold glow red hot?????