The Ford Barn

deuce lover · 05-29-2025, 02:36 PM

I have never experienced these issues you are having In all the years that I have worked on and used these gauges in my 33,34 Fords. If the gauge is clean it should function. If the air line is clear and seals at the tank and the gauge there should not be a problem.I feel that there is a problem with the sender. I would pull it and thoroughly clean it. I use a ultrasound machine with the proper solution.The NAPA carb cleaner with basket used to work but the solution now is not as strong.There could be a slight blockage from old dried fuel internally.Its not normal that there is a pressure build up in the air line.Here is a pic after I have cleaned them.

petehoovie · 05-29-2025, 02:37 PM

Quote:

Originally Posted by deuce lover

I have never experienced these issues you are having In all the years that I have worked on and used these gauges in my 33,34 Fords. If the gauge is clean it should function. If the air line is clear and seals at the tank and the gauge there should not be a problem.I feel that there is a problem with the sender. I would pull it and thoroughly clean it. I use a ultrasound machine with the proper solution.The NAPA carb cleaner with basket used to work but the solution now is not as strong.There could be a slight blockage from old dried fuel internally.Its not normal that there is a pressure build up in the air line.Here is a pic after I have cleaned them.

JimG · 05-29-2025, 04:01 PM

I did try to clean the tank unit to the best of my ability using lacquer thinner, a wire brush some bottle brushes and wires for the thin pipes. Posts 25 and 33 show my results - not nearly as clean as yours, Sheldon but I believe all the passages were open and should have been functional. I tested with compressed air. I don't have an ultrasonic parts cleaner. Looks like they are $100-$150 or so depending on the size needed. Do you know what Liter size is needed to fit the tank Unit into it? What size do you have? What cleaning solution do you use? I really thought the tank units was as clean as it should have needed to be.

05-29-2025, 04:01 PM	#3
JimG Senior Member Join Date: Aug 2016 Location: Hamburg, NY Posts: 285	Re: Redoing my hydrostatic fuel gauge with new red liquid I did try to clean the tank unit to the best of my ability using lacquer thinner, a wire brush some bottle brushes and wires for the thin pipes. Posts 25 and 33 show my results - not nearly as clean as yours, Sheldon but I believe all the passages were open and should have been functional. I tested with compressed air. I don't have an ultrasonic parts cleaner. Looks like they are $100-$150 or so depending on the size needed. Do you know what Liter size is needed to fit the tank Unit into it? What size do you have? What cleaning solution do you use? I really thought the tank units was as clean as it should have needed to be.