I got a fuel leak on this truck I am fixing up ,It looks like its leaking diesel from the bottom part of the lift pump. Is there a place were they can leak from there ,all I saw was a wire connection there and I also checked the two fuel connections on each side and they look dry the only part I could see fuel dripping was from the bottom of the lift pump.Do I have to replace the pump ? or is there something else I got to look for? thanks for your help!

 

i think thats a weep hole to let you know when the seal is leaking and i think you have to replace the lift pump i dont think it is serviceable

 

Cool I guess I am buying a new one from cummins. Thanks!

 

I would highly suggest an aftermarket lift pump over the cummins one. They are not exactly known for being very reliable...

 

Yea my lift pump is the block mounted lift pump and its leaking also and i noticed my fuel miliage is steadly is gettin worse. Im currently putting a air dog 150 on mine

 

DO NOT buy one from Cummins, or even a "rebuild" from Ebay... Oh blah blah its a Bosch shop.. whatever. Bosch wouldn't even make the damn pump right in the first place! Get a hold of one of our vendors on here or do a "request a quote" for one. These guys know there stuff and getting a performance one means its BUILT to handle it! Thats just my .02$