1970 Gas Gauge Weirdness
The gas gauge hasn't been working for years. I purchased a new tank and sending unit (Bob's Impalas), dropped the tank and tested the sending unit before installing it into the tank. It tested great but after putting it into the tank it seemed to not work. I had initially put 5 gallons in it in case I needed to drop it again. I dropped the tank again, pulled the sending unit out again and tested it again.
As before I tested it with the ground connected where it would go etc. moved the float and it seemed to work fine.
After putting it all back together I put 12 gallons in expecting it to show half tank. It is showing a little less than quarter tank.
Does anyone know why if working it is not very accurate?