How to use fuel injector puller? | FerrariChat

How to use fuel injector puller?

Discussion in '308/328' started by climb, Jun 7, 2011.

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  1. climb

    climb F1 Rookie

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    #1 climb, Jun 7, 2011
    Last edited: Jun 7, 2011
    Falls under the how to fix a Ferrari for dingbats category:

    Just got Verell's fuel injector puller. Looks just as advertised and delivered quickly..thanks.

    Now how to use?

    Problem is when i turn the head nut with a 16 mm socket the nut just keeps moving up the threads closer to the head nut and never puts upward pressure on the sleeve and in turn never pulls the injector out. I tried tightening the nut as tight as i could but as soon as you turn headnut clockwise it loosens it (nut on threads).

    If i turn headnut counter clockwise it eventually unscrews from the top of the injector.

    I know it's something simple and obvious so would someone just tell me what I'm doing wrong?

    Thanks
     
  2. ramosel

    ramosel Formula 3

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    #2 ramosel, Jun 7, 2011
    Last edited by a moderator: Sep 7, 2017
    Once you get the whole thing assembled, HOLD the bolt head, tighten the nut on top of the sleeve. This LIFTs the bolt and of course, the injector attached to the bottom of it.

    Hope this helps,
    Rick
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  3. climb

    climb F1 Rookie

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    Thanks..Got it.

    Nothing left of the rubber seal.
     
  4. climb

    climb F1 Rookie

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    #4 climb, Jun 7, 2011
    Last edited: Jun 7, 2011
    Dont think these auto haus seals are the same. Hard to tell since old one is shredded.

    Nope wider than the aluminum hex ring itself...damn.

    A few more pictures in old threads would have really explained a lot. Pictures worth a thousand words as they say.

    Puller is fantastic..thanks for the response.
     
  5. ramosel

    ramosel Formula 3

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    #5 ramosel, Jun 7, 2011
    Last edited by a moderator: Sep 7, 2017
    Destroying the old seals is common. I killed at least 5 of mine (but replaced them all) New ones look like these. The Super Lube was a tip from Verell. It makes installation very easy.

    Once you get the knack of the Verell tool, it works really smooth and no chance of damage like using a claw hammer or a "popper" tool. That Verell is a Saint for us.

    These injectors are basically designed for Mercedes and VW (Scirroco, Rabbit era). On those cars there is a plastic like bung in the manifold and the notch on the injector gets a fat O-ring. The O-ring snaps into the plastic bung. On our cars there is a rubber sleeve that fills the metal cap. That sleeve has this O-ring integrated (molded) into its center hole. It looks like it has an O-ring inside it but its all just one piece.

    Rick
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  6. climb

    climb F1 Rookie

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    The seals i got have a wide area and a narrower area below the wide part.

    Got the wrong ones.
     
  7. climb

    climb F1 Rookie

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    #7 climb, Jun 7, 2011
    Last edited: Jun 7, 2011
    When you say snaps into the plastic bung what do you mean plastic? Isn't that round silver outer sleeve aluminum? Im talking about the one that needs the 12mm drive socket to remove.

    The piece that farthest to the right in your last pic next to the injector.

    Edit: Oh, i see bung is on the VW's not our cars.
     
  8. miketuason

    miketuason F1 World Champ
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    Stuart, are you saying there's four pieces to this injector?
    1) injector
    2) rubber sleeve
    3) o-ring
    4) metal cap
    Is this correct?
     
  9. mwr4440

    mwr4440 Five Time F1 World Champ
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    Only the early "i" cars have the o-ring/captive cap design ramosel shows here.

    IIRC with the QVs the O-Ring design changed.
     
  10. mwr4440

    mwr4440 Five Time F1 World Champ
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    YES. For the 80-82 cars ONLY (IIRC, to include the Mondis).

    I can vouch personally for the 81's.
     
  11. miketuason

    miketuason F1 World Champ
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    Thanks Mark, what do I have in my 84 QV then?
     
  12. mwr4440

    mwr4440 Five Time F1 World Champ
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    Sorry, I am jittery right now. I am tired and bit happy and just got a VERY BAD annyonomous email. I get them. Old occupational hazard.


    Is this a "STUMP the Chump" question?

    I can look up the parts manual just like you can.



    My bet- 2 O-rings plus plastic white bushing. But if yours is in the gray zone ... who knows. Ferrari doesn't.
     
  13. Jonny Law

    Jonny Law F1 Rookie
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    #13 Jonny Law, Jun 7, 2011
    Last edited by a moderator: Sep 7, 2017
    Just finished updating my injectors on an '81. Here is what I discovered and used.

    Tried using a socket wrench to unscrew the injector assembly, but this just stripped out the metal sleeve holding the injector seal. Ended up getting a VW injector puller and bolting it to a slide hammer. [Fig 1 & 2] This worked great, but you do have to put some force behind it. Once the injector is out, use a 12mm Allen wrench socket tip on a ratchet to remove the metal sleeve and rubber seal. Did not have a doughnut seal in mine, only the sleeve. It will sheer off part of the sleeve seal, but you will not be recycling them anyway. [Fig 3] The newer injector seal is a green doughnut type and the holder is a VW part. [Fig 4 & 5]


    Notes:
    Remove the engine cover for better access.
    The injectors were the original steel, version 10 & 14. Replacements are brass version 47.

    Cost summary
    Tools:
    Injector Puller - $10
    Slide Hammer - $14
    12mm Allen wrench socket tip - borrowed

    Parts:
    Injectors - $30 each ($240)
    O ring seal - $3 each ($24)
    Injector holders - $3 each ($24)

    Supplies:
    Teflon putty - $10

    Total $322ish
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  14. climb

    climb F1 Rookie

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    I think i have just a rubber seal and no separate o-ring like the 328's have. Somehow i got replacement rubber seals that are to big for the metal caps.

    1. yes
    2 .yes
    3. no
    4. yes



    3 pieces total 1980 gtsi USA spec.
     
  15. climb

    climb F1 Rookie

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    #15 climb, Jun 7, 2011
    Last edited: Jun 7, 2011
    My injector holders are aluminum and silver where yours are brown and appear to be plastic.

    Verell's injector puller is great.
     
  16. Jonny Law

    Jonny Law F1 Rookie
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    The orginals were metal, probably aluminum. The replacements are a plastic. I had my reservations at first, but since they are mounted to the intake pressure is not and issue, and have not had any issues since the install.
     
  17. mwr4440

    mwr4440 Five Time F1 World Champ
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    You sure? Post a pic of all your parts. The injectors w/rubber seal fit pretty tight and will not go together dry very easily at all, from my experience.
     
  18. ramosel

    ramosel Formula 3

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    #18 ramosel, Jun 8, 2011
    Last edited: Jun 8, 2011
    I think you are missing the transition here. From your pictures, your car is a QV. It was not a replacement, it was and evolution.

    "Originals" (GTSi/GTBi) were a ferrous metal. Later (QV) they transitioned to a non-metallic (not sure of plastic type) seat and used an O-ring to seal between the injector and seat much like the earlier Mercedes and VW counterparts.

    What I don't know is whether the two are interchangeable or not. I suspect not as I believe the threaded portion is the QV manifold for the injector seat is larger than the threaded portion of an "i" manifold

    Rick
     
  19. ramosel

    ramosel Formula 3

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    I retract that... I was wrong. it's no longer 3:30AM, the virus in my eye has calmed down and I've had a bit more sleep.

    Now I am even more curious... ARE the parts interchangeable?? Anyone know?

    Rick
     
  20. Jonny Law

    Jonny Law F1 Rookie
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    This is an '81 GTBi 2 valve. There is a brass injector holder that is a little smaller, but would not fit mine.

    No sweat. As far as I can tell they are. The injector and doughnut seal fit in to the plastic holder (larger) and the brass holder (smaller).
     
  21. mikael82

    mikael82 Formula Junior

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  22. Jonny Law

    Jonny Law F1 Rookie
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  23. Jonny Law

    Jonny Law F1 Rookie
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    #23 Jonny Law, Jun 8, 2011
    Last edited by a moderator: Sep 7, 2017
    So the seals I pulled are a single sleeve with no "o ring".

    As for part numbers;
    Fuel Injector BOSCH Part # 0437502047
    Injector Seal Part # 3430210606
    Fuel Injector Insert Part # 063133555
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  24. climb

    climb F1 Rookie

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    #24 climb, Jun 9, 2011
    Last edited: Jun 9, 2011

    Your injector seal # shows up as just an o-ring and not the thicker rubber seal. Will these little o-rings work on the 308i?

    I thought the o-ring was just for the 328.

    Only place i find the thicker black rubber seal is here:

    http://www.superformance.co.uk/a-308/carb.htm


    Half way down page.
     
  25. Jonny Law

    Jonny Law F1 Rookie
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    Correct, the o-ring and plastic holder will work in place of the thicker rubber seal and metal holder, on the 308. And Superformance is the only place I found that had the rubber seal, but I don't think they stock the metal holders.
     

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