nope. Under the ”C” clip on top of the injector. I was hitting the “C” clip to get it out and slipped and hit “that metal ring just below it” what ever it’s called , and broke it.

I broke one of these. You can see the pattern of the”C” clip on top. I got another one.

On the same note, Mark you were right. Its the HPOP, an “O” ring or the STC fitting. I’m not a happy camper. One of my grandsons is coming home from Collage this weekend to help me. I’ve got no one to point the finger at but me. I put this engine together.

Thanks Jack!! Got pump off finally and don’t see anything obvious. Yellow “O” ring in proper place and so was the other one. Is this a reman pump or are those markings normal. Really didn’t notice that when installing. Big question. How do you test the pump?

I found a Navastar test procedure. Will do it but don’t really have a lot of faith in it. Last thing is to put it in and test before I put it all back together. (That is what I should have done before I took it out)

No, I did air test and had a pretty hefty leak. Re sealed all passenger injectors and still had a considerable leak. I’m trying to figure out how to do a test on pump outside of engine. All ideas welcome

I did nipple cup seals when i did the engine about 15,000 miles ago. Didn’t do new nipple cups. I took the CV out of the valve cover and have same leak on drivers side. Praying it’s not branch tubes.

Yes. I’ll do that tomorrow I haven’t tested it outside of the engine.

I’m sorry I didn’t see your post until I logged off and was reading mail. To answer it is yes I did at oil filter. Thanks tho