[id_rather_be_cummin12v]

Alright i have a 2000 ctd, i have the airdog fuel system on it. The truck runs great, the only problem that has occurred is if i let the truck sit for about 30min to an hour and go back and try to start it, it cranks and cranks and i have to hold the pedal to the floor and then it finally starts, and it dont sputter or nothing it runs fine. also if i go into the store and come out it fires right back up like normal. And if i back it into the drive way with the nose pointing down hill it fires right up even after sitting all night. So i cant figure out what the problem is, any suggestions. Thanks

 

[id_rather_be_cummin12v]

where is the check valve located.

 

[id_rather_be_cummin12v]

where is the check valve located, also i removed the old lift pump, would that be causing any trouble with the starting problem.

 

[id_rather_be_cummin12v]

what are the connector tube o rings and where are the located?