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  1. #1
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    Fuel Injector Question...

    Hi,
    One fuel injector is acting wierd (#5 I think). Engine starts to misfire, throwing up a code.. I heard about tapping on the fuel rail, which fixed it for a few days at max. Then I realized it was the fuel injector itself. I tried turning the injector a few degrees and it fixed the problem. Question... are there seals on the top and bottom of the fuel injector that I can replace? any help appreciated.
    thanks!
    SilverBullet75
    Formerly: '01 Ebony VXSTLTH
    Now: '08 Saab 9-7x Aero 6.0L

  2. #2
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    The seals top and bottom are different sizes, but they come in a set of 8 each.

    I've posted the part number in some other thread.

    John C.

  3. #3
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    If you have have an injector cutting in and out, and tapping on it brings it back, it may just be sticking. Try running a good cleaner through the tank or better yet have them all cleaned.

    albert
    ________
    CS Concept
    Last edited by skunkworks : 02/02/2011 at 10:17 PM

  4. #4
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    Thumbs up FIXED!!

    Hi! I just fixed the problem..
    I replaced the o-rings for all the fuel injectors and also replaced the fuel pressure regulator. It's been about a month and a half and no problems since!!! (only problem: I don't know what fixed it... the o-rings, or the FP reg.!! LOL).


  5. #5
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    Gersh Dernit!!



    It only fixed it for a few months! It was not the fuel pressure regulator (from what I can tell). The missing problem and Check Engine Light came back a couple days ago. I can remedy it by twisting the #5 fuel injector a few degrees, either direction. It fixes it for a few days then comes back. When it fixes it, it has more power and runs smoother than it ever has since I owned it!.

    **Anita, you mentioned that my exhaust has a strange sound to it when revved.... this is the problem!

    Two possibilities:

    -Carmax replaced the wire that goes to the injector coupler. Bad repair? (I can move the wire and the problem happens as well.)
    - Injector is failing (least likely, in my mind)

    ***Anyone have a fuel injector CONNECTOR with wire (as long as possible) laying around?
    Thanks!
    Last edited by SilverBullet75 : 05/10/2005 at 02:20 PM

  6. #6
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    New ones from Merlin are $110 plus o-rings, aftermarket (no one has listed but they do for the same engine in a Trooper/Rodeo) are $79 special order here in TX. Misfires can also be caused by low octane fue, lean conditions caused by vacuum leaks, or carbon build up on the head/valves that causes the engine to need higher octane fuel to avoid misfire/pinging.

  7. #7
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    Connector?

    Thanks Tone,
    Do you happen to show a listing or part number for the electrical connector for the fuel injector? (with wire?)

    I want to try that before I replace the injector.
    Thanks for your help!

  8. #8
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    Bad news - if that is broken/damaged the only way to get just the Isuzu part is from a junk yard or to buy a big, expensive harness from Isuzu...
    Last edited by Tone : 05/10/2005 at 08:00 PM

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