I have a small coolant leak between a rubber hose and a metal pipe. The hose is slightly too large at this end (but slightly too small at the other). I have tightened the clip as hard as it's going to go but the leak has only reduced. What is a good way to seal it?

Could you build up the pipe that the hose connects to with plumbers tape or something similar?

plumber's tape? tell me more.

or if you can use 2 j?clip give it a try

2 jubilee clips and even maybe a coke can shim???

Pat...

Could you not get a custom hose made up or get someone to machine you an aluminium reducer to enable two different diameter hoses to be used?

2 jubilee clips is a definite possibility, I'll try that tomorrow.
Custom hoses. Are they expensive? who makes them? I wish I'd known about that before I started plumbing.

Any other ideas?

[Edited on 29-10-2005 by smart51]

electrical insulation tape wrapped around the fitting before fitting the pipe

Have to agree with Hellfire , find someone with a lathe and get them to make a joiner/adaptor and use the correct size hose . You might get away with PTFE tape but do not use insulation tape

marc made me an aluminium pipe last year. You can also get rubber hoses with different diameter ends. Around a tenner from halfords. Two jubilee clips worked well for me too.