I just installed a Fass 165gph system on my truck. I previously was running the carter pump on the frame with no issues. Now if I let my truck sit over night it cranks longer before it starts. Also I see no fuel pressure on my gauge until after the engine starts. My fuel pump is wired to the 10 amp fuse in the cab marked ignition. After the truck sits over night I turn on the key and check the fuel neck to see if the pump is pumping and maybe my gauge is wrong but its not until the truck starts. I am lost on this one its not that complicated of a system but this has me stumped.

I ran 1/2" line all the way to the front I just have a small section off the tank that is 3/8". I wouldn't think that would hurt the pickup is 5/16". Do you have the name of the manager you talked to at fass,there are some real bozes there. They think I may be bleeding down and sucking air from the factory pipe dope they use on the suction side,so I am going to pull it out and redo it. I guess its possible but i dont have any leaks.He also said put new filters on,just want I want to do is but 2 filters on a system that is a week old.

54 minutes ago, oldsilver said:

I just have a small section off the tank that is 3/8". I wouldn't think that would hurt the pickup is 5/16"

 

It will put stress on the pump pulling a hard vacuum all the time. Neither FASS or AirDog isn't really designed for 3/8" hose. 

Not sure if you installed shut off valves or not.  I can isolate every section of hose I have.  About $5.00 each...then remove fitting then screw in a "tank plug" fitting and put in 25 pounds of air to find any leaks.  For viewing inside tank at bulk head fitting bore scope hooked up to cell phone.  

Edited June 2, 20186 yr by 015point9
Add pic