On 15 Nov 2005 11:31:37 -0800, in uk.d-i-y
wrote:

Had a Corgi round this morning and he couldn't locate the source of the
leak. Needless to say it wasn't leaking when he arrived, and only
spills a tablespoon or so a couple of hours after the heating cycle.
As the boiler's new and the leak small, there was no tell-tale
evidence.
Doing my own detection, at first I thought it was the compression joint
on the CH return pipe but I've since discovered it's dripping on there
from above, but below the upper section of the boiler. This would
appear to narrow it down to the pump, or some connection to the pump.
It isn't leaking from the front bit, or the main compression joint but
there seems to be a flexible connector going somewhere which I can't
see or get to it. I wonder if there are other connections to the pump
that might be the source.
If anyone has any ideas I'd appreciate it. I'm not about to pay WB
£220 for a service call

Place a sheet of newspaper below the suspected leak, and look for a damp
spot appearing. That should enable you to determine the leak path. Check
especially as the boiler cools, but (obviously) don't leave it so long
that the spot dries out. I have detected very fine leaks on compression
joints by wrapping tissue paper tightly round the pipe - it holds the
moisture so you can detect it, rather dripping away to evaporate
somewhere.

Phil
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