Thread: Leaking fuel from vacuum on injector pump 300tdi

Sounds like what you're describing is the boost compensator and not that it'll help you very much Erik, but I've just melted the line running to the turbo!, see post elsewhere.
I hope if someone manages to give you the good oil that they might also give me a heads up on my issue to!

Thanks for that.

Yes it is the boost compensator diaphram. Does anyone know why it would have fuel leaking out of the dribble hose?

Erik

fuel leaking from there is not a cool thing. it means that the pump is in need of some overhaul work, If you're lucky just the oring that seals the compensation sense pin part 91 in this pic


and labled in the top right of this one

Thanks for the helpful diagram Dave,
If I pull that part out to have a look at the O ring am I going to destroy some intricate setting?
Erik

from memory no but its a PITA to get to with the pump still on the donk and as with all thing IP related super duper ultra spotlessly "my local brain surgeon keeps wanting to book my engine bay as an operating theater" type clean is important here. Where abouts are you?

Originally Posted by Blknight.aus

fuel leaking from there is not a cool thing. it means that the pump is in need of some overhaul work, If you're lucky just the oring that seals the compensation sense pin part 91 in this pic


and labled in the top right of this one

Thanks for the pic of the exploded view of the injector pump. I'm goinf to hijack this thread and say that I have a leak from the Distribuator head.

looks like there are a couple of o rings in there. any idea of part numbers or sizing of these o rings?

And where i could get some from?

I assume pulling this off will be no big deal but like Blknight has said it needs to be spotless.

if its only from the center plug (parts 129, 130/2 in the first diiagram no, thats easy, if its the main body o ring forget it, you can screw the pump playing with that if your not meticulously careful.

that said, it can also be the sealing ring on the cut off solenoid, the body seal to the "governor body" or the control arm. Respectively they are easy, you want to really know what you're doing and easy but fiddly to do if you have the modded pump.

Originally Posted by Blknight.aus

if its only from the center plug (parts 129, 130/2 in the first diiagram no, thats easy, if its the main body o ring forget it, you can screw the pump playing with that if your not meticulously careful.

that said, it can also be the sealing ring on the cut off solenoid, the body seal to the "governor body" or the control arm. Respectively they are easy, you want to really know what you're doing and easy but fiddly to do if you have the modded pump.

There is a leak between the main body and the head so I assume it will be the main body o ring

But i guess I can change the center plug o ring and see how it goes. Do you know what size it is? and will a diesel place have them?