I have put new income fuel lines on my truck and i have a new fuel cape would any one know why ofer night i lose my prime, i can get it to start after cranking for about 10 seconds? could u direct me in the right spot are the banjo bolds on return possibley lose or do i need to replace the return line to please help

 

Did you check the fuel preheater? What about the soft line from the fuel preheater to liftpump? My 12V had prime loss issues. Turned out to be the softline to the liftpump. It had some extreme dryrot issues.

 

I will today im in school at the time and will cheak but i have put a whole new lift pump on my truck.

 

In 10+ years of owning mine, I have experienced the same problem (twice) and both times it has been the return line.