my 87 supra has this problem. i opened the rad cap, started
the engine and the coolant came out of the rad.
before that, a "gorggling" on the dash could be heard when
accelerating. i suspected it to be the hg but since no
water in oil, car was hardly driven. tstat was removed and
added coolant but was going to reservoir even before.
anybody replaced a hg on a 7mge engine? anything to watch
for? how was it? planning on doing it myself. gasket was
purchased already.