coolant pressurising in radiator and blowing into header tank.losing about 1 litre every 4 days just round town,got hot once had radiator and cap checked guessing blown head gasket is there any way offinding out which side!or any other ideas.
franc123,
Mar 5, 7:54am
not without conducting a cylinder leak test, no.
lilybing1,
Mar 5, 8:12am
cap pressure tested and radiator cleaned by rad shop not getn hot now how would a thermostat create a pressure issue!
franc123,
Mar 5, 8:19am
It can if it is causing overheating and thus the coolant to go above boiling point.What model is it!I have had VX series 3.8's around the 2001 era given to me with similar symptoms that have cracked heads, a couple of them now.Not saying its a common problem but it does happen.
richardmayes,
Mar 5, 8:25am
Faulty thermostats won't open, therefore hot water can't circulate out of the engine into the radiator, so it stays in the engine and the whole thing gets hotter and hotter. But the volume of water-filled space inside the waterways remains the same, so the pressure increases until something breaks!
lilybing1,
Mar 5, 9:12am
yea but it is not getn hot.
jmma,
Mar 5, 9:19am
Don't thermostats usually fail safe! eg fail open
ralphdog1,
Jun 18, 5:51pm
Tell us more about this once How hot, what actually happened, what were you doing, how far did it get driven while hot etc etc
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