Goin in

[Powerstroke94]

Well I finally decided to tear into the injection pump a little bit and see if I can find out what is wrong. Got the fender off today and took the cover off that is underneath the HH. I had oil with fuel in it come out. One question I have is where are the o-rings that are letting the fuel get into the pump? And what are the sizes? And when I took the cover off I noticed the safety wire was not around the 2 screws inside the cover. I'll be updating this thread as I go along. Thanks!

 

[SMOKEWAGON66]

...Good luck with that

 

[Seth_O]

3 o-rings, 2 underneath the HH (you have to remove it to get to them) and one on the actuator shaft (where you were missing safety wire.) If you turn on the in-tank pump (but don't start the truck) you can watch the fuel drip out of the HH. That's good for a few minutes entertainment.

Also, since you're that far into it, may want to check the seal on the booster pump as well.

Here are the o-ring sizes:
Large O-Ring: 2.484 x .139 = -230 or 230 (depending on which standard)
Small O-ring: 2.109 x .139 = -227 or 227 (depending on which standard)
Actuator O-Ring: .426 x .070 = -013 or 013 (depending on which standard)


You can order a kit with all the gaskets, o-rings and safety wire and such for the IP from Erik's for a pretty reasonable cost. I went that route and just stored the ones I didn't use this time for the next time I dig into it.