My 1990 90 has a 300TdI in it

Last week driving across a field the bottom hose came off , luckily somebody saw it and water was still coming out so I don't think any damage has been done

The whole 90 is a rebuild not by me so I don't know if he clip was loose or if it's pressurised and blown it off

It's a metal pipe with no lips on it because of the conversion

I replaced the clip and added some self amalgamating tape for good measure

It's been run for 30 miles since and seems ok but the temp gauge takes a long time to get to normal which is the same as it's always been in my ownership

Is there anything I should check to see if it is pressurising

System will pressurize to a degree anyway due to the water heating up, if you want to make sure there isn't a head gasket leak ask a garage to do a 'sniff test' on the coolant. Personally I'd just drive it and keep an eye on it for a while as it could just have been a loose clip.