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Thread: Vacuum Takeoff - HELP! CONFUSED

  1. #1
    Baby Twin
    Join Date
    Jul 2017
    Location
    Cambridgeshire England
    Posts
    11

    Vacuum Takeoff - HELP! CONFUSED

    Hi Folks,
    I have a 2000MY mille and it's slightly hesitant coming off a closed throttle (just where you want some finesse opening up on the way out of a corner)
    I decided to check the throttle body synchronisation and now I'm curious
    One of the first things the book says is to remove the vacuum takeoff from the right hand side on the rear throttle body, so out of curiosity I followed where the pipe goes, it goes to a 'T' connector and one side goes to the left side of the rear throttle body and the other side appears to go nowhere - i.e. it's open to atmosphere

    Surely this can't be right and may well be responsible for the hesitation at small throttle openings? the thing pulls like a beast when you really open the throttle.

    Anybody know where the other end is supposed to go please (it has a small brass right angle tube clamped in the end of the pipe)

  2. #2
    Baby Twin
    Join Date
    Jul 2017
    Location
    Cambridgeshire England
    Posts
    11
    A HUGE thankyou to Griff at Aprilia Performance for responding to my e-mail and talking me through what was wrong

    In case any one else experiences similar problems, the open ended pipe with the brass tube in the end is supposed to connect to the clutch housing to supply the vacuum for the slipper clutch, the brass fitting had broken on my bike.

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