hello i have a problem and have no idea why it is happining i start my car and let it warm up.... it is on about normal and all of a sudden the water starts spewing out of the release thing on the radiator and plenty is coming out heaps of water and then loosen the radiator cap a bit and it also spew out of there. i tried putting a different cap on it but no luck does any one know why this is happinening? thanks in advance justin

Sounds like the head gasket has blown. It allows combustion gasses to get into the water jacket and force water out the cap That's providing you know you have a good cap..

Time to lift the head...

_________________
SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

i would have to agree with Mick. Time to take the head off and have a look.

Ryan

_________________
Ryan Filippi
Minis In The Gong
[email protected]
www.minisinthegong.com.au

could it be the cap? isnt there two types of caps a longer one and a shoprter one?

Sure, it most definitely could be the cap, and it is an easy and cheap option to check.

But if you have eliminated the cap (by ensuring you have the right one), there's really not a lot of options.

How long does it run for before the water starts blowing out? If it is only a couple of minutes and it's not scalding hot, then it won't be because it is overheating.

_________________
SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

it ok i worked it out it was the cap bi needed a longer one tried with my brothers caop which was longer and it fixed the problem.... thanks a lot fellas for all ya help.......

to find out if you have a blown head gasket you can use a tk tester it will tell you if combustion gasses are entering the cooling system

have you ever thought it might be possible you may have a air lock or blockage in the system? its a big call to say head gasket. i would run a hose the engine and flush it out completely refill it and let the system bleed of air. if the same thing happens. get a TK tester and test it. if all is good and youve changed the cap. more then likely you have a blocked hose or water jacket or the thermostate isnt opening fully.

_________________
oil leak?..what oil leak..that puddle under the car is just sweat from all that horsepower

Well that's a good outcome..

_________________
SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.