6.0 injectors
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Junior User
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6.0 injectors
I just found out that the cause of my high pressure oil leak was from the left side injectors. I'm gonna replace all four. I've heard once some go out that they all could. What do y'all think on this?
Cargo Master
Joined: Mar 2007
Posts: 3,103
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From: AB/BC
A broken o-ring on the injector at the oil rail will cause a huge leak.Improper installation of the oil rail can cause damage to the o-ring.
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Junior User
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I have it at a mechanics shop. He checked the hpop and it was fine, and teh icp valve, which was fine. So he checked the left side of the injectors and he said thats where it was.
Elder User
Joined: Nov 2010
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So you're looking at spending $1000+ or so for 4 injectors to fix a bad o-ring? If the injector itself is actually bad, I would replace 1 injector. If it's the o-ring, I would replace all of the o-rings and call it a day.
Logistics Pro
Joined: Mar 2007
Posts: 4,604
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From: Claremore, OK
I agree, if it's just leaking HPO...replace all four sets of o-rings/washers and be done with. Four o-ring kits at my Navistar dealership cost me $35 (Int 1843682C91) summer of 2010. No need to replace the sticks themselves unless you upgrading something "wilder".
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Fleet Owner
Joined: Nov 2003
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For that you need Alliant Power Injector Seal Kit AP0002
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Logistics Pro
Joined: Mar 2007
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From: Claremore, OK
That Navistar part (1843682C91) is a "set" that comes with both o-rings for the injector barrel (white & black), copper washer and the o-ring (blue) for the pig-tail plug in the rocker box.
Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
But it doesn't have the D-ring in the top of the injector where the oil rail fits into the injector, which is where the HPO leak is. For that you need the alliant set.
Logistics Pro
Joined: Mar 2007
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From: Claremore, OK
Brain fart, I'd forgotten about that o-ring.
Maybe I need two cups of coffee before posting on the forums?
Fleet Owner
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Junior User
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Well he replaced all 4 left side injectors and now there is a problem still with the pressure not being high enough. He said it fluctuates up and down. What do y'all think is the cause. He checked the hpop and the icp and said there were fine.