[jjj]

Originally Posted by SileNceR

selekta - i've been caught out a few times with the coolant boiling in the resevoir after stopping...the trick is to leave the car running for a bit after you've given it a flogging instead of driving 15km full throttle then switching it straight off. You either drive it slow for a bit or let it idle high - ie about 1000rpm to let the engine itself cool down (the temp guage might look fine but if the engine is still hot the coolant will heat up quick without any flow)

if the water is boiling in the reservoir and steam coming out you are getting back pressure into your cooling system. I'd say you have a cracked head buddy. Sorry for the bad news .