I had some bumbleheads doing some remodeling work awhile back, and
recently I smelled propane near an exterior, above-ground run of black
pipe they installed. Tested with soapy water, and sure enough one of
the joints at an elbow is leaking. Getting this run apart so that I
can get to the elbow joint will be a hassle. Is there any way to
repair this without disassembly? Perhaps a liquid pipe dope that I
could brush on, and would seep in well enough to seal the pinhole
leak?

Thanks,

Kelly