Alright on four days ago i had my lift pump replaced, because it was starting hard. for the past couple of days it was runny and starting great. Then all of a sudden it started loosing a lot of power and my fuel rail pressure gauge was jumping all over the place and i was blowing a lot of white smoke. I would do this periodically for a few miles, then it finally died. Could it be a faulty lift pump? Also i didn't here the lift pump do its cycle when i turned the key on, like it normally does. My truck is bone stock just all gauged out. The lift pump i bought is a OEM replacement from BD diesel, i got threw XPD. Any Thoughts please!

 

Bad injector!

 

cheack and make sure lift pump is working and pressure is correct, if ok, id check fuel tube nuts to see if any are loose

 

^^What he said^^ Is it making oil?