1937 Fuel Gauge Question

Posted by R Howe On 2021/1/26 12:41:07

I would like some advice to see if I have explored all possibilities. My fuel gauge is inoperable.
I dropped the gas tank and removed the float mechanism. I then tested the impedance within the mechanism and recorded the ranges between .10 ohms and 121.4 ohms. If course, the higher value should cause the fuel gauge to register empty.
I then took the fuel guage and attached one side to the negative pole of the battery and the other side to the input line of the float mechanism. I connected the frame of the float mechanism to the positive side (ground) of the battery.
Upon the movement of the float itself, the fuel gauge does not move. However, if I take the line off of ground and reattach it, I do see slight vibration of the needle.
I tried reversing the lines on the fuel gauge and the needle stayed stationary without any movement even when detaching the line and reattaching.
So, I wanted to see if there might be another path I could follow other than this one to test the gauge before shipping it out to be rebuilt. Thanks to all.