308QV Mixture Plug | FerrariChat
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308QV Mixture Plug

Discussion in '308/328' started by olehholy, Sep 7, 2009.

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  1. olehholy

    olehholy Karting

    Nov 12, 2003
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    NJ
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    Oleh Holynskyj
    #1 olehholy, Sep 7, 2009
    Yesterday I discovered that the "cap" for the mixture screw on the fuel distributor is missing. My understanding is that this will cause a lean mixture condition and should be capped immediatly.

    This seems like a part that would be diffcult to get. Has anyone used a more commonly avalable solution to cap the mixture setting hole ?

    Many thx,

    Oleh
     
  2. eurogt4

    eurogt4 Karting

    Apr 15, 2006
    243
    Sacramento, CA
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    Mike
    #2 eurogt4, Sep 7, 2009
    Most of the older (late 70's, 80's) VWs, BMWs, Mercedes used those. Some had the pressed-in metal cap, others had a rubber plug with a metal rod a couple of inches long out the top. Does yours have a threaded hole about 1/4" down? If so, you can get a short screw and put a small o-ring under the head to seal the hole.
     
  3. irondogmike

    irondogmike F1 Rookie

    Sep 8, 2006
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    Michael Tucker
    #3 irondogmike, Sep 7, 2009
    I ordered one and got it in a few days from ferrparts,I thought I had a extra one I've would've gave to you.sorry
     
  4. olehholy

    olehholy Karting

    Nov 12, 2003
    122
    NJ
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    Oleh Holynskyj
    #4 olehholy, Sep 8, 2009
    Thanks guys. I took a close look to see if there are threads in the bore, but it does not look like it. The 308QV exploded views on Ferrari Parts UK is not up yet so I cant do a parts lookup. Would any of you have a part number of rthe plug ?

    Thx,

    Oleh
     
  5. irondogmike

    irondogmike F1 Rookie

    Sep 8, 2006
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    #5 irondogmike, Sep 8, 2009
    the part you need is #111182 @ a cost of $14.64,the one I got came white but it work,check the parts sheets on www.Ricambiamerica.com
     
  6. airdelroy

    airdelroy Formula Junior

    May 10, 2007
    420
    Austin, TX
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    Aaron Richardson
    #6 airdelroy, Sep 8, 2009
    Leaving the plug off changes the mixture? I had not picked up on that in all my reading on the CIS.

    Aaron
     
  7. irondogmike

    irondogmike F1 Rookie

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    #7 irondogmike, Sep 8, 2009
    its rare,but it keeps the screw in place just in case,
     
  8. mwr4440

    mwr4440 Five Time F1 World Champ
    Rossa Subscribed

    Jun 8, 2007
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    Mark W.R.
    #8 mwr4440, Sep 8, 2009
    Can someone post a pic of this? Please????

    I am having a REAL hard time imagining this in my head with only 3 remaining and doctor certified, simultaniously functioning brain cells ............

    :eek:
     
  9. fastradio

    fastradio F1 Rookie
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    Apr 26, 2006
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    David Feinberg
    #9 fastradio, Sep 8, 2009
    You guys are talking about two different plugs...

    Mike,
    The plug you refer to is actually a "limiter" which prevent the throttle plate base angle setting from being tampered with. Although not required, it's a great idea to preven those who don't know the difference between the idle air bleed and the pre-set, typically not ever tampered with, throttle plate angle.

    Aaron,
    The plug you're refering to prevent false air from getting into the FD/Intake housing and giving you inaccurate AFR readings after a mixture adjustment. This plug is required if you want accurate, repeatable AFR readings.

    Best,
    David
     
  10. irondogmike

    irondogmike F1 Rookie

    Sep 8, 2006
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    #10 irondogmike, Sep 8, 2009
    David,I'm sorry I thought the plug they talking about is on the throttle body #20. thanks for clearing that up
     

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