Hey guys brand new to this forum, I’m trying to figure this thing out. My work has a 96 F800 with the 5.9 in it and an Allison backing it. I don’t know how much different this 5.9 is from any other. I’ve searched and searched and cannot find much info about this thing. So basically I pulled the full tank on this thing because it was leaking, had it patched and sealed. Replaced the tank and filled it up, primed the s*** out of the system to the best of my ability and couldn’t get it started. I’ve tried pressurizing the system, bleeding the system, using a hint of ether, and just about everything else all of the forums have said. If I fill up the fuel filter and use the priming while having someone crank we can get it going and it’ll run off the fuel in the filter for about 20 or 30 seconds and then stall. I’ve check the tank to make sure the pick up tube isn’t clogged, I’ve used and electric fuel pump to the Ip and it doesn’t really want to start there but I could probably get it to go. Anyway my main question is does this sound like a bad lift pump? The truck ran fine before I pulled the tank.