86_GT_5.0

yeah i thinking the same thing but finding it hard to beleive and the night that it overheated i left it at the shop at 11:00 pm and came back the next day at 1:00 pm and it still had pressure then i popped the cap explain that?

5.0stanger

With a blown head gasket, you can pump your comression pressure past the gasket and into the antifreeze which causes pressure and the antifrezze to get pushed out into the overflow causing you to overheat. The pressure isn't great enough to go back though the gasket, so it dosen't have anywhere to go after the cap on the radiator closes. That is why you hear a puff later

5.0stanger

You might be able to go in and re torque the bolts and get lucky...if that is the problem...

86_GT_5.0

ha yeah right should i just pressure test the system and see if i can get coolant into a cyl?

86_GT_5.0

takes like 2 weeks now for it to act up like this and i would say about 1000 miles

5.0stanger

It will take a lot of pressure, like 150 psi, same as a compression stroke. It would work. Just before I changed mine again, I was sure it couln't be b/c I checked my compression and still had no less than 150...Maybe look into a new cap for you radiator(stock psi) and a new thermostat?

86_GT_5.0

been there and done that im jsut so sick of working on this pos

5.0stanger

when you start modding, you always have to work on them.

5.0stanger

Just be happy it is a mustang and not an escort

86_GT_5.0

yeah i know its somthing we did cause it never had a prob before