Ozalid

Hi All,
Got an on again off again coolant leak..It only seems to happen (when it does) After its been running for about 5 min..Then after it warms up it doesnt leak again...?? Its the radiator cap side thats leaking..Ive replaced radiator cap..
Sticking thermostat?
Thanks

EZEARL

You mean the cap side (left side) of the radiator itself is leaking?

Ozalid

The leak is appearing under the Jeep on the radiator cap side ... I cant see where its coming from....and after it warms up it no longer leaks....??

EZEARL

Not saying it's your problem but when my original radiator gave it up at around 150k miles it developed a crack along the side about 1/4 of the way down that started seeping intermittently. You need to dry it up and get under there while it running and see what you find.

PatHenry

x2 on possible radiator crack. The other thing to check is the hose to the overflow.

I would get a cooling system pressure tester (loan-a-tool at your local parts store) and put some pressure on the system. I once chased a mystery leak and finally got the pressure tester - once I put some pressure on the system it was obvious (coolant spraying right out of the spot) where it was leaking.

wgebb

Take Pat's advice, but tighten up the clamps on both ends of the lower radiator hose before you head to the autoparts store, could be as simple as that.

cruiser54

Look here....

Ozalid

OK Thanks for the input.... The lower hose clamp had failed....Chinese I'd guess... New bigger better clamp..Problem seems to be solved

PatHenry

Nice!!! It's always nice when it's something simple and easy.