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Hey guys, ignore the name. My old man owns a 2018 XD and yesterday we dropped the tank to replace it with a new 50 gallon one. But whenever we attempt to prime the system, the pump only runs for a couple seconds and shuts off. We've checked the seals and lines but everything seems to be okay. Any ideas?
 

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How much fuel did you put in the new tank?
With the water separator filter, or even the engine fuel filter, once you take it out to check the O-ring, that O-ring is no longer good. It’ll need to get replaced.
When it primes, you can kinda tell at the end of priming, the line is filled with fuel. Were you able to?
Did you park the truck nose up of nose down?
 

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hey preffered -- i've read where those big 50 gal tanks don't pick up all the fuel near the bottom - i'd try putting 20+ gal of fuel in it and then try to prime again. hopefully you weren't trying to prime it with the fuel level too low and burned out the lift pump
 
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