hey guys im new to this site and a diesel mechanic myself and have to say that the write ups on here got me to solve my problem and i just want to say thanks to everyone. I have narrowed down my problem to be air getting into the fuel system between the tank and the inlet on my lift pump. Can anyone tell me or have a picture of which tube coming out of the tank is my feed to the prescreen filter assembly? i have a 94 12 valve automatic. thanks in advance.