fuel leak from side off pump

[peter6163]

ok guys i hope some 1 can send me in the right direction
to start off on the side off the pump there is a cover under it a spring pushing against what i think must be a pressuere compensator, about 2 mounths ago it started to drip from it i replaced the o-ring and it stopped. 2 days ago it started again had a look o-ring, it was oviled and not returning to shape ( o-ring was from a auto shop not certain if rated for diesel) should i be thinking redo o-ring or do i have a bigger problem
any help would be great


Cheers and thanks Peter

[geeves]

As far as Im aware the only seals that can be done in place are the top plate and the accelerator linkage. This doesnt sound like either so sorry its a pump off rebuild

[turnturn]

There are definately different grades/materials of O-Rings available. Do you know which type you used?
I would lean towards either Nitrile (N70, N90, C70), Flourocarbon (Viton, V75, V90) or Silicone.

[geeves]

nitrile = ok Viton = better Silicon = no good in diesel

[peter6163]

i still havnt sorted it yet when i firts start up it weaps but as soon as it get warm wont leak again till the next day starting to think make have a hair crack in cover any ideas thanks peter