Stupid me!!! HA HA!
the guy I bought it off said he had that trouble too, it turned out to be the GAS CONVERTER! the diaphragm or something viabrates when it is cold (like pinching the end of a balloon) causing the 'beeping' sound.
It is a lovato system, which will be changed when I install the EFI manifold and run straight gas.
(i now fell a bit stupid)
ah well, even the best make mistakes! :-)
XF died, Now It's a 6-cyl Cortina!
Rear ended 3 times, 4 close calls.
All while I was stationary, still counting the idiots..