It blew off under pressure after a cambelt change- the garage hadn't bothered to retighten the tension screw on the hose leading into the top of the radiator.
not sure why they undone it, i have never undone the top hose or bottom hose to change a cambelt… and ive been changing them everyday for 6 years ;) sounds like they were lost!
im a tech, but i just cant be arsed sometimes do sort my own car out, busmans holidays and all that.
i took my banger to kwick fit for its last oil/filter change for a measly £35 inc desposal charge and oil and materials!
its only costs then £10 if you think about it after you pay out for the materials!
mind i check it all after ;)
will say though.
people like to think cars are easy and oil and filters are easy to change BUT the amount of cross threaded sumps i have had to tap or replace as someone messes up.
best one ever. was a battery!!! welded a spanner from the block to the battery!!! so i will never ever say again its a easy job ;)