Psu pump injection valve - help

[Tpoole]

My injection valve is not sealing, I have been trying to lap it with no luck, ambac wants more than I paid for the whole generator for just the valve and seat.
Any advice for my mep 002a?

 

[Ray70]

Hi Trey, Is it the delivery valve and seat you are looking for?
Item 4 in this picture? If so I can probably help you...

 

[Tpoole]

Hi Trey, Is it the delivery valve and seat you are looking for?
Item 4 in this picture? If so I can probably help you...
View attachment 888392

Yes sir

 

[Ray70]

Ok, let me look when I get home.
I had 3 or 4 of them, but have sold a few, but pretty sure I have 1 or 2 more.
Do you think your needle is not seating in the holder, or is the holder leaking where it seals against the main body?
I suppose the other question is how do you know what's happening? Is fuel leaking past with just the electric pump running?

 

[Tpoole]

Ok, let me look when I get home.
I had 3 or 4 of them, but have sold a few, but pretty sure I have 1 or 2 more.
Do you think your needle is not seating in the holder, or is the holder leaking where it seals against the main body?
I suppose the other question is how do you know what's happening? Is fuel leaking past with just the electric pump running?

My mechanic is stating the needle isn't sealing properly allowing pressure to suck backwards on the injector lines. It's the needle and the seat that's leaking, he also did a vacuum test on it and it was leaking, we tried to lap it with no luck

 

[Ray70]

I found 1 matched delivery valve set left in my parts stash.
Checked it and the needle is sealing perfectly within the holder.
I'll send you an email shortly.