radiator problem

[kegan]

carrying out valve clearances on my GU 4.5 97model auto leaning over the top of the radiator and snapped a fitting to the top of the radiator and to the right of the radiator cap - clean off allowing coolant to pass through, not sure what this fitting actually does, there is no hose attached - I have inserted a self tapper screw which has stopped the coolant, ran the engine with no leaks, would appreciate any knowlege as to what the purpose of the fitting is.
Cheers

[93patrol]

might be your overflow nozzle that normally goes to your overflow bottle cant be sure with out pics. Is there a small 8mm or so hose that comes out from under your radiator to a clearish plastic bottle? there should be one there some people used to take them off in the old days because it perished and never replace it

[happygu]

You are not the first to have done this.......

I have read of at least a couple of others that have done the same thing ( with the same fix )

Mic

[Bigrig]

Of its the one on the radiator filler neck, then it should have a 8mm pipe running to the overflow bottle ... photo would be good to assist mate.

[threedogs]

Just use a brass 1/4 bsp to 8mm hose fitting, some tape and RTV and all fixed, cant find pic,
but will take another for here. not 100% on that size.