A couple of days ago I noticed some coolant residue just below top hose. Was able to tighten clamp but it seems to be bubbling/leaking faster now.
I guess the further tightening caused more damage to plastic?
Can this be repaired?
Thanks in advance

 

If it's the end at the thermostat housing, removing the hose and using some emery cloth on the housing nipple may help. If it's the radiator end and it's the plastic variety you can try cleaning it up but no guarantees. Check your hose ends too...if they've gotten stiff it may be time for new ones.

 

Thanks for the tips will investigate further tonight.