My 03 lb7 wasn't starting. first suspected that a leaky filter head was the issue but after a filter head rebuild I'm still having trouble with the truck starting. occasionally though it will fire and when it does runs perfect with no issues. If i shut it off it will fire again under a minute but if left longer will lose prime and then the same things starts over. any input would be greatly appreciated. Could it possibly be fprv? cp3? thanks

 

Sounds like you have fuel line issues to the CP3 ...

 

Clear fuel lines will let you see if you are getting air in the fuel

 

Anything on this one latley ??