by mitchk » Wed Feb 19, 2014 2:30 pm
So i ordered the low pressure piston lift pump from the hungry diesel and i got it on last night and now its been acting kinda weird. Last night wen i started it it took the usual couple cranks to start cause it had been sitting a few days but for about 30 sec or so it was only idling at around 500rpm. i didnt touch the throttle or anything and just let it idle till it smoothed out and got to a normal idle. I drove it back to school from my garage and it seemed fine. didnt get on it any though cause it was pretty cold. today i went out and wen i tried to start it it cranked over for a little while and nothing. then it started to fire and die. it did that about three times till it finally went and it didnt seem too happy. real rough at first then smoothed out. I took it out for a little rip to see how evrything was working and it doesnt seem to have much top end. the whole reason i got the new pump was because i filed down the bleed screw and drilled out the banjo bolts and it would lose all power around 1400 rpm with the stock pump. Now it feels around the same as it did befor i did all that with the stock pump but i can definetly notice its getting way more fuel on the bottom end and doesnt seem to be getting much on the top end. dont know if i just need to mess with my pump set up a little. mabey back the smoke screw out a little to keep the low end fuel down a bit. it almost feels like its flooding it on the bottom end but then doesnt have much on the top end. i was also expecting a little more rpm after drilling out the banjo bolts but it still only has power to about 15-1600 rpm. sorry for the length, just trying to make sure i get everything down. thanks, mitch
Daily: 91 d350 727 gear vendors over drive, 3/8 feed line, THD lplp, maxed pump, Denny t 2, timing to head, #366 spring, 60# valve springs, arp studs, 60 horse injectors?(po), THD bahf, s362sxe
Project: 93 w250 5 speed, ground stock pin, #366 spring, 60# valve springs, THD lplp, intercooled compressor non intercooled turbine, diamond eye 4 inch, custom intake, south bend hd single