M944A1 fuel problem

[Ssgt cornbread]

I was just given an m944a1 5 ton 6x6 and having fuel problems, it runs good while the fuel filter is full but and it sucks from the filter but does not suck from the fuel tank, i have changed the fuel filter and checked the lines from tank to filter all clear but still wont pull from tank, only runs when i fill the filter. Please any help will help.

 

[patracy]

Moved to the 5 ton forum. Check the pickup/sending unit in the tank for a failed (rusted out) line or failed hose.

 

[simp5782]

I was just given an m944a1 5 ton 6x6 and having fuel problems, it runs good while the fuel filter is full but and it sucks from the filter but does not suck from the fuel tank, i have changed the fuel filter and checked the lines from tank to filter all clear but still wont pull from tank, only runs when i fill the filter. Please any help will help.

As the other member said, check the pickup tube. If it is broke. You can use some 3/8 copper tube from the home depot and a new fitting for the tank and braze it together. There were some folks selling stainless steel ones here on the site.

Where in MS are you?

 

[Ssgt cornbread]

Gpt, I'll check that, pickup tube and fitting is good.

 

[simp5782]

you have to remove the tank I believe on those to get to the pickup tube out. I know they are tucked up under that shirt. unless you have all of that removed already.

I would replace the pickup tube. fitting. and the line from the tank to the filter head with push lok rubber lines. metal lines can suck air pretty easy.