I have a leak below alternater and seems like fuel is not returning cause you can hear it loading up on pump. I dknt underatand. Went from kennedy dieael to airdog 150.
What motor did you put in it? If it is an LB7 or LLY, it could be the FICM leaking. Hook a gauge up to see what kind of pressure you are getting. If it is too high, that could be why you have the leak.