Pressure build up in reservoir tank.
I have a 2002 ford explorer and I cant seem to
figure out what I have blow back pressure to my
reservoir tank and it blows antifreeze out of the
cap and makes a mess. Im not sure if its because
of the warped heads or because the thermostat
sticks. If I dont let the car warm up for at least 10
minutes the temp gauge sky rockets and wont go
back to half way for about 10 minutes after I shut
the car off. Could it be that the cap leaks? Or the
heads? If anyone has any information that would
be great.