7.3 IDI Injector Stuck in Head

Discussion in '6.9L IH & 7.3L IDI Diesels' started by ClemsonIDI, Jan 27, 2017.

  1. ClemsonIDI

    ClemsonIDI Registered User

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    Update: got it out and all cleaned up. I think the issue was that the bore had so much carbon built up on the threads the injector just wasn't seated all the way. I screwed it back in and it locks down tight now. I wound up using the bore brush dipped in some diesel kleen. It worked really well. Thanks for all the help!
     
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  2. ClemsonIDI

    ClemsonIDI Registered User

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    I stuck a pick in the bottom and it still seems rough. Maybe it's more carbon. The washer doesn't have a cut in it. 20170128_124102.jpg

    20170128_124358.jpg
     
  3. icanfixall

    icanfixall Official GMM hand model

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    Thanks for the great pics of the gasket. What does the other side look like? This gasket does not look like copper in the pics and.. It appears to have some extra marks telling me it was reused. If you plan reusing this please anneal it. To do this heat it up on any flame till it turns dark. then quench it in cold water. Then clean off the scale from heating and use a flat file to make all the compression marks disappear on both sides. All used copper gasket will work harden from heat. When you anneal them they become soft again and will conform to any gasket seat in the head but a deep cut.
     
  4. ClemsonIDI

    ClemsonIDI Registered User

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    It is copper it's just stained black from all the carbon. The other side was perfectly flat. Appardently someone didn't tighten the injector all the way down when they worked on it last. That's why all the carbon formed inside the camber. I installed new copper washers on all the injectors installed new zd9 glow plugs, both with a healthy dose of antiseize. I'll finish putting my new return system together tomorrow and hopefully get the thing back on the road.
     
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  5. ClemsonIDI

    ClemsonIDI Registered User

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    Looking forward to not constantly smelling the massive diesel leak under the hood.
     
  6. icanfixall

    icanfixall Official GMM hand model

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    Ok... Sounds like you have things well in hand. These engines are very simple once an owner understands them. Really simpler than any of the newer all electronic diesels.
     
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  7. ABNORDY

    ABNORDY Registered User

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    Hello, This thread is great with advice, I have an 88 F250 7.3 IDI , I am changing injectors and the #2 injector is stuck, the threads are all the way out, spray a whole can of penetrating fluid throughout a week or so and have tried all the advice from this thread! What say I use a slide hammer? would that mess up the barrel of the hole?
     
  8. 79jasper

    79jasper Chickenhawk

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    The sizes of the holes don't matter much. Just the seat and threads.
    I would try the slide hammer.

    Sent from my SM-G892A using Tapatalk
     
  9. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    https://www.oilburners.net/threads/removing-your-idi-injectors.80357/

    This should help you as well
     
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  10. ABNORDY

    ABNORDY Registered User

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    Homemade slide hammer/idi, injector puller. Worked great, it took 5 times, but it came out with the nozzle still attached!. Now to fish the copper seals out and clean bores.

    20171208_104217.jpg

    Screenshot_20171208-124448.png

    Screenshot_20171208-124454.png

    Screenshot_20171208-124503.png

    Screenshot_20171208-124518.png
     
    Last edited: Dec 8, 2017 at 3:26 PM
  11. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    Sweet!
     
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  12. ABNORDY

    ABNORDY Registered User

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    This is a photo of the bore my stuck injector was, I actually think there was no copper washer in there

    171210_100813.jpg
     
  13. Thewespaul

    Thewespaul Supporting Member Supporting Member

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    Yikes. Make sure and clean that out really well
     
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  14. ABNORDY

    ABNORDY Registered User

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    Yes, there was a copper washer, it's now about as clean as it's going to get, used a 12 gauge bore brush and some good ol Berryman B12

    20171210_163137.jpg

    20171210_162733.jpg
     
  15. 79jasper

    79jasper Chickenhawk

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    Might be "okay" for now, but I would borrow/buy a seat reamer. I'm sure someone here has one.

    Sent from my SM-G892A using Tapatalk
     

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