Those sending units have a little circuit board on the inside. A needle drags against the board for your tank level. You can restore the circuit board by rubbing it with fine steel wool. Otherwise the circuit board is expensive, i found an aftermarket one on Ebay
Could you explain more about the check valve thing, I understand it keeps from filling the other tank. However, my issue is finding that exact piece or the metal circular retaining clip that goes inside it that attaches to the fuel line. Mine was mangled to the point of no return and the regular finger looking retaining clip does not fit.
The only way to find that inline checkvalve is to find one on another truck, as they’re obsolete now. Dorman sells the retaining clips in the Help! section, Dorman 800-017.
I just got me an f350 that’s been sitting for years . I’m replacing the pump and the tank but the fuel line from the pump to the filter is broken off inside . I’ve tried taking it out with my quick disconnect but no luck. Now I’m looking at replacing the lines . No luck finding the lines anywhere . Would you suggest anything ?
The little plastic retainer clips that fit between the fuel line ends and the ports on the sending unit cover I have never used them with no issues…🤷🏻♂️
I’m talking about the inside retainer metal thing. I’m taking the whole line to a hose place to gets new end or hope they have the little keeper thing.
@@hemilife83tollonjr22 You either need a check valve or a new fuel pump for the tank that is getting filled up. The terrible part is, the pump can be fine but the valve inside can go bad (I suggest replacing it with a quality part such as a Bosch unit (Advance Auto always has a coupon code. I think right now it is D20) and be done.
My 94 f250 diesel the front tank will pull fuel from rear tank. It acts like it's starving for fuel and occasionally and fuel filter light will come on and it will die??
Sounds like the fuel selector valve is getting stuck halfway Had that happen on my truck, resulting in me going to a 38gal rear tank and being done with the dual tank setup as a drive ability feature; Now it is getting redone as a 19gal auxiliary fuel tank in addition to the 38gal
@@TheFSeries first diesel truck I've owned. I'm learning as I go and youtube channels like yours are helping me. The shops around here act like 1994 is taboo. They cringed at me when I try to get them to work on it. One place told me they would have to send it out. Love my truck it drives like it's new. Came out of Texas and no rust, a couple of small dings gives it character.
