I went out in the car tonight and it was fine for a couple of hours then on the way back the temp wen t up to the red then came back down again it did this several times then stayed on the red so pulled over then the steam started coming out of the header tank the only thing is if i press on the rad cap it stops bubbling out of the header tank, i have taken the thermostat out and still the same also tryed my mates rad cap and still the same ??
HELP PLEASE
