1.8t top radiator hose wants to keep coming off

[neilbaker86]

As per the title, the top radiator coolant hose on my 1.8t keeps slipping back on the radiator elbow and has several times come very close to blowing off.


I've tried several different jubilee clips, the latest being quite a substantial one which I daren't do any tighter for risk of cracking the plastic elbow, but I've just given the car a quick run and it has already slipped back by about 3mm.


Any ideas? Could the cooling system be over pressurising? The hose does seem to have swollen to some degree.