1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

i have 2 questions about xj700....

Discussion in 'XJ Technical Chat' started by steve71100, Oct 24, 2008.

  1. steve71100

    steve71100 Member

    Messages:
    63
    Likes Received:
    0
    Trophy Points:
    6
    Location:
    memphis, tn
    i recently bought my xj and have a couple of questions about it. 1st is it normal for the gear box to clikck loudly while changing gears? it shifts fine but seems loud while dong so. 2nd what is the best way to turn gas off while the bike is parked? i left it on and the carbs started overflowing with fuel. my petcock only has on, res, and pri..... I guess my question is how to i turn gas off?
     
    steve71100, Oct 24, 2008
    #1
  2. SlackerMax

    SlackerMax Member

    Messages:
    54
    Likes Received:
    0
    Trophy Points:
    6
    Location:
    Royal Oak, MI
    You should not be leaking gas in ON or RES. Sounds like a bad petcock to me but I'm sure others will chime in...
     
    SlackerMax, Oct 24, 2008
    #2
  3. wamaxim

    wamaxim Active Member

    Messages:
    1,215
    Likes Received:
    2
    Trophy Points:
    36
    Location:
    Vancouver, USA
    You should leave the petcock in the On position, there is a vacuum line coming off one of the carbs that opens a valve inside the petcock when engine vacuum comes up(I.e. When the engine is running). It's no longer like the old days when there was an off position.

    Likely flooding causes?

    Float needle not seating

    Float level adjusted too high

    Should also check the petcock as it should not flow gas with the engine off.
     
    wamaxim, Oct 24, 2008
    #3
  4. RickCoMatic

    RickCoMatic Well-Known Member

    Messages:
    13,842
    Likes Received:
    68
    Trophy Points:
    48
    Location:
    Massachusetts, Billerica
    The function of the Petcock shutting-off is limited to the fitment of and O-ring Seal at the thn of a Piston Valve.

    If the O-ring wears-out or fails to seat ... the Carb Floats will have to hold-back the entire contents of the Fuel Tank.
    They're battle with Gravity usually finds Gravity the winner and the leak begins.

    The Fuel Tank will empty into the Carbs.
    The Carbs will overflow or spill through the Emulsion Tube.
    If they overflow through the Emulsion Tubes ... Fuel flows into the Engine.
    Leaking into Cylinders with Open Valves.
    Down through Piston Ring gaps into the crankcase.

    Several factors can cause the Petcock to Leak.
    Worn O-ring at Vacuum Valve
    Worn-out Wafer Disc inside Metering Body
    Diaphragm Membrane leaking fuel through Vacuum Hose.
     
    RickCoMatic, Oct 24, 2008
    #4
  5. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

    Messages:
    9,381
    Likes Received:
    2,087
    Trophy Points:
    113
    Location:
    The room where it happened
    And scratched or gouged diaphram plunger o-ring SEAT in the main machined body of the petcock......which is the real reason many people say the petcock rebuild kits "don't work".......check that seat CAREFULLY (like under a magnifying glass carefully) for any scoring or scratches. If present, they must be eliminated or the petcock replaced.
     
    chacal, Oct 24, 2008
    #5

Share This Page