i just bought this 2000 f350 7.3 powerstroke it is leaking fuel out a tube aprox.3/8 inch that is mounted oon the passangers side of the engine block down by mount. whats causing this? the truck has many upgrades from dp tuner everything from bigger turbo,injectors,pump,heads,everythings been done right but whats this leak and whats causing it?

 

If it has the fuel bowl your fuel bowl drain needs new orings

 

Fuel bowl drain valve...

This and some time should fix it...

Riffraff Diesel: Fuel Drain O-rings