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No fuel flow in reserve position. Petcock problem?

Discussion in 'XJ Technical Chat' started by jamcam1999, Jan 31, 2010.

  1. jamcam1999

    jamcam1999 Member

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    Does anyone have a picture of the proper layout of the petcock on the 1982 XJ650 Seca? I can't get fuel through it in the "reserve" position. Works ok in all the other postitions. Thanks in advance for any help.
     
    jamcam1999, Jan 31, 2010
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  2. Creamsoda

    Creamsoda Member

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    I have the same problem on my maxim, no flow only on the reserve side.
     
    Creamsoda, Feb 1, 2010
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  3. RickCoMatic

    RickCoMatic Well-Known Member

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    You first Test the Vacuum Valve.
    Hook-up a length of Hose to the Vacuum Port on the Petcock and take a Vacuum on the Hose.
    (Just placing the Hose to your lips and drawing a slight Vacuum will do.)
    If the Fuel Flows in On when there is a Vacuum and Fails to flow otherwise ... Open the Face of the Petcock and see that the Wafer is in the proper placement.
     
    RickCoMatic, Feb 1, 2010
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  4. jamcam1999

    jamcam1999 Member

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    Which part are you calling the "wafer"? Do you mean the rubber or neoprene piece with 4 holes in it?
     
    jamcam1999, Feb 1, 2010
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  5. RickCoMatic

    RickCoMatic Well-Known Member

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    That's it.
    The Rubber Disc with the holes in it.
     
    RickCoMatic, Feb 1, 2010
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