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Thread: main jet

  1. #1
    apriliaforum Junkie philhansen's Avatar
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    main jet

    my bike has been running to rich. i found out today that my bike is running a 155 main jet even though the bike is standard except for the derestriction and powervalve. what is the original jet size i always thought it was 120. i have a 34mm carb.

  2. #2
    apriliaforum expert Speedfreak UK's Avatar
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    120 is the main jet for 28mm carbs, u would kill ur bike running that

    try a 150 and see if things improve

    steve
    Posted by Steve, MSN / E-mail = stevie_a712@hotmail.co.uk
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    Aprilia's owned:
    2002 SR50 Ditech Red/Black - Sold
    2002 RS125 Superbike Replica - Sold

    1999 RS125 - Being used for Project RS257



    RIP Spike mate

  3. #3
    apriliaforum Junkie philhansen's Avatar
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    i have a 155 in there now with the needle on its top setting, but in 1st and 2nd if i full throttle it i get a splutter right before the powervalve kicks in.

  4. #4
    apriliaforum expert Speedfreak UK's Avatar
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    i get that, but only when the bike is warming up at about 60degrees and its the first time im going into the powerband

    maybe your blade needs a clean

    steve
    Posted by Steve, MSN / E-mail = stevie_a712@hotmail.co.uk
    Feel free to add me


    Aprilia's owned:
    2002 SR50 Ditech Red/Black - Sold
    2002 RS125 Superbike Replica - Sold

    1999 RS125 - Being used for Project RS257



    RIP Spike mate

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