I replace the fuel pump assembly, and after i replace it i check for fuel pressure when i turn the key to on my fuel pressure gauge goes up to around 78 psi and it drops back down to 0 in less than 10 minutes. i believe i may have connect the three line wrong that run from the gas tank back toward the engine i know one of the line is the fuel supply line and one is the return line and i think one is a vapor line I'm not sure about that but one of line want connect up why?
Dec 8, 2024 at 4:53 PM

