Join Date: Oct 2005
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I had a 1.2 clio a few years ago n had a similar prob. When going for a run I would turn the engine off n find a hissing from the coolant bottle. I did'nt have a temp gauge and so did'nt no of a probelm. I was on my way to buy a new coolant cap when the headgasket went. Ended up having the head skimmed, new valve and a new cap. Not a problem after that. For what a cap costs I would but one.
Sorry for the story! Hope its of use though.