I’ve attempted to replace the capillary tube and sending unit on my original gauge using a donor gauge. YouTube has a couple videos on how to do it using a section of copper tube from an oil pressure line as a slip sleeve soldered in place.
Has anyone done this successfully??? I keep getting a small pin hole on the last joint where I can smell the Ether leaking out. Maybe I shouldn’t use flux core solder?
During the process the sending unit is submerged in ice water to draw all the Ether to the bulb.
If I could find a good usable gauge with a good capillary tube I would abandon the fix attempt.
Any help is greatly appreciated.
Bob

1946 Chevy 1/2 ton "patina" pickup with a 1953 235 engine, otherwise all stock and unmolested!