Injector Question
Because racetruck
Joined: Apr 2007
Posts: 2,786
Likes: 104
From: Monterey Bay, CA
Here are instructions for replacing the cups, as well as the links for the cup tool rental. You could probably return it as a core to Alliant as well.
https://www.riffraffdiesel.com/injec...et-7-3l-94-03/
https://www.riffraffdiesel.com/conte...eplacement.pdf
https://www.riffraffdiesel.com/alliant-ad-injector/
Cargo Master
Joined: Mar 2019
Posts: 2,907
Likes: 788
From: Kinnula,Finland
That injector nut ( lower half of injector,upper is called injector body) has an extra hole in it.Most certainly usable as a core with a new nut in it.But i am quite sure that nobody will refund you for that core.
CNCFAB
Joined: Apr 2020
Posts: 4,874
Likes: 2,006
From what I have heard and experienced in the past, is when ordering new Alliants, they will accept just about anything back. I have been under the understanding that Alliant just has them melted down, and remade
Super Moderator
Joined: Dec 2011
Posts: 13,283
Likes: 6,046
I went to change injectors on my early '99 7.3L and pulled one with a blow-out like it was shot from the inside out by a .22 right above the 4 oil ports towards the bottom of the injector. What the heck caused this and is there anything I need to look at before reinstalling the new one?
It almost appears as if the blown through hole was pierced by fuel ejected at pressure during the spill portion of each injection event, little by little, over a long period of time.
Is this the only injector that presented this blown through hole?
Have you inspected the other injectors on that part of the injector body that communicates with the fuel rail (where the four holes are) to see if there is any raised portion or bump, or small fissure or crack or tiny split on the outer barrel body? A bump or tiny crack would indicate where the outer surface of the metal was stretched from pressure applied in the inner surface.
Who (what company) rebuilt the injector?
Are you the original owner of the truck?
Do you have any evidence or premonition that the injector that blew out is an original injector?
Do you have any other photos that show the entire body of the injector, including the cup area, to see the heat signature, if visible?
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