Yooooo my head gaskets recently blown in my 2004 Chevy and I used the Blue Devil Head Gasket Sealent, you know to see if it works..........It stopped the smoking from coming out the exhaust so it did what it do, but my car is running hot still.......so I popped the hood and I see smoke coming from down under the maf I wanna say the thermostat area and then I heard hissing from the maf area so my question is what do you think the problem is......I just need reassuance on my theory.