Wats up people ? How is everyone doing this fine friday evening? I am doing great so to speak. I bought a Gq last week and its got me baffeled. I am having overheating problems, after driving for 20min the car creeps up too half 5min after that its up at HOT mark.After turning the car off all my coolant was coming out of the overflow bottle. I have already done the following.
#1 flushed out complete system
#2 new radiator cap plus thermostat
#3 undone and retightend intake and exhaust manifolds (making sure there was no leaks)
#4 new belts and waterpump

Sorry to be a pain but can anyone help or suggest anything at all. I asked a mechanic and he seems to think that its the head and gasket. I am not convinced from his theory.
Much appreciated for any advice. CHEERS !!!!!