Carb Rebuilt Tuned Up and WOW!!!!

when i got my 75 valiant it had been sitting for years. the fuel tank was full of goo. i cleaned and de-rusted it by using electrolysis and a lye solution for the electrolyte. it worked wonders! (note: be sure you hook the electrodes up correctly. if you get it backwards, you will destroy what you are trying to save!)

my personal recommendation is, try cleaning the sending unit by soaking it in a lye solution. it would be wise to go ahead and order a new fuel float, they are about seven bucks. since they are brass, even if you don't need it right away, they have an indefinite shelf life. you can see if your float leaks by using a hair dryer on the low setting (BE CAREFUL!). if it has tiny cracks in it (a very common condition, often very hard to see with the naked eye), the fuel will swell and seep out of the cracks. once you have made sure the tank is clean and you have a good float, make sure you have EXCELLENT ground (scrub strap and contact area w/ wire brush).

fuel sending units don't fail very often. it is usually a float or inadequate grounding. if your oil gauge, fuel gauge, and temperature gauge are all not working, you likely have a bad instrument voltage regulator ("IVR"). there is an excellent article on how to upgrade the IVR by mr. ehrenberg of Mopar Action fame. i posted a thread about it on the slantsix website. it cost me ten bucks and my gauges work!

congrats, and good luck!