Did you have 5 ports on yours? Four high pressure and one inlet?
Hmm this makes sense as well just extra steps (and a little confusing). So you’re saying I’ll have to remove the internal unloader first before replacing the injector and installing a new unloader valve on the outside? Could you send pictures yes that will help. I will try taking off hex brass plug first as @dperez mentioned, seems easier. Then I will remove the inter unloader if that doesn’t work. Hopefully I don’t have to resort to replacing the whole pump!
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Try the one with no hex head first. It’s counter sunk, no head, recessed hex for Allen wrench/hex key
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This is pretty awesome stuff @dperez and @Crystal-Clean.
If you research on here back to the beginning of time on this subject, They say it can’t be done, That’s why I backed off last night and said it couldn’t because I didn’t wanna give bad advice, my to cents, carry on fellas, fascinating stuff !!
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I barely remember the thread because I didn’t get to curious about it as I steer clear of homeowner grade stuff. Now I’m just curious
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Because he wants to recirculate back to buffer to save his pump from burning UP @dperez. Lol
That’s why I called in the PWRA top mechanic to help, Its above my pay grade
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Oh I’m with him now I just couldn’t follow all the jankyness
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So here’s what I would have done if I was @Crystal-Clean pull one of the hp plugs of his and install a pressure relief valve and set it a few hundred psi under the set pressure on the built in unloader that can not, will not bypass and bypass via high pressure relief valve. Done
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Damn exact same unloader lol
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That’s a good idea. I may have done that had I known anything about it when I got started. Lol
Yup you got it
Just call me Mr. Impossible 
Yup. Going to do a 5.5 or 8 build now
My first rig was purchased in pieces. Everything I bought was either worn out, broken or dismantled. I scrimped and saved and repaired everything I had to build a hot water machine. Then I went on to rebuild my first transmission on my first work truck to move my machine around lol all professional equipment worn broken in need of repair professional equipment but I skipped right past the homeowner stuff because I already knew better
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Direct drive final answer. Bet you $2
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@Crystal-Clean this is a gear driven pump 
I am aware of what it gear drive pump looks like. lol that’s why I said yes to @Hotshot. It is a direct drive. I’m going to do a 5.5 or 8 gear build.
My bad I see he asked if it was a gear. I thought he said direct. 
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