/ Register

  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Help GSX250 - carb issue again any thoughts

Discussion in 'Suzuki 250cc Twins' started by gainey, Sep 18, 2015.

Page 2 of 2
  1. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

    Messages:
    5,111
    Likes Received:
    3,478
    Trophy Points:
    1,148
    Joined:
    Dec 23, 2012
    Gender:
    Male
    Location:
    Thailand
    Home Page:
    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    Fit a pair of Mikuni VM carbs. You can tune them to run with pods and all the parts are readily available.
    [​IMG]
     
    • Like Like x 2
    maelstrom, Oct 14, 2015
    #21
  2. gainey

    gainey Active Member

    Messages:
    89
    Likes Received:
    39
    Trophy Points:
    88
    Joined:
    Feb 19, 2015
    Gender:
    Male
    Location:
    port macquaire
    My Bike:
    Suzuki GSX250
    Great thanks I am going to try the air box in it again tomorrow night hopefully it will work but then I have to move all the wiring again
     
    gainey, Oct 14, 2015
    #22
  3. gainey

    gainey Active Member

    Messages:
    89
    Likes Received:
    39
    Trophy Points:
    88
    Joined:
    Feb 19, 2015
    Gender:
    Male
    Location:
    port macquaire
    My Bike:
    Suzuki GSX250
    We put in different jets 22.5 idle and 127.5 for the main as we thought that's what was in their.
    The nine runs sweet smooth except now if it idled and we rev it above 5000 it stays up their until you rev it hard a few times and then it comes back down
    I have order some carb boots Hoping it's an air leak any thoughts
    The revs stay up their when I ride as well
     
    gainey, Oct 16, 2015
    #23
  4. Willrcr15

    Willrcr15 Well-Known Member

    Messages:
    549
    Likes Received:
    399
    Trophy Points:
    373
    Joined:
    Nov 11, 2013
    Gender:
    Male
    Location:
    Newcastle
    My Bike:
    FZR250 3LN 89
    I won't make another comment after this.
    That's exactly what it will do without the air box, your wasting your time & maybe money, jets won't fix it.
    Good luck !
     
    • Like Like x 1
    Willrcr15, Oct 16, 2015
    #24
  5. gainey

    gainey Active Member

    Messages:
    89
    Likes Received:
    39
    Trophy Points:
    88
    Joined:
    Feb 19, 2015
    Gender:
    Male
    Location:
    port macquaire
    My Bike:
    Suzuki GSX250
    Thanks
     
    gainey, Oct 16, 2015
    #25
  6. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

    Messages:
    6,400
    Likes Received:
    4,788
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1937 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, FT500 plus a few others.
    Still sounds like an air leak causing it to run lean.
    Hope you have it fixed by next weekend so you can join us for the ride to Sawtell.
     
    Murdo, Oct 16, 2015
    #26
  7. gainey

    gainey Active Member

    Messages:
    89
    Likes Received:
    39
    Trophy Points:
    88
    Joined:
    Feb 19, 2015
    Gender:
    Male
    Location:
    port macquaire
    My Bike:
    Suzuki GSX250
    Sorry mate been away with work no luck fixing it at this stage it idles nice until you rev it and then it stays up we just replaced the carb boots hoping it was a leak but no good
    So we have no choice but to revert back to the air box so I need to get a new set of idle and main jets and then redesign everything to move the electrics
    Any thoughts on where to get the jets from ASAP cheers
     
    gainey, Nov 4, 2015
    #27
  8. Alipture

    Alipture Active Member

    Messages:
    17
    Likes Received:
    16
    Trophy Points:
    173
    Joined:
    Apr 19, 2015
    Gender:
    Male
    Location:
    Pascoe Vale, Melbourne
    My Bike:
    '83gsx 250
    its the CV carbs , they have real trouble running without a smooth intake of air , with pods on they get a harmonic that pulls the rpm up , you can stop it doing that by putting a rag between the filter and the carb, although thats not really a solution because its just restricting the air so it runs rich,

    Im working on cutting up the old airbox to 1/3 the size (near the mesh filter) to see if that will be good enough, if not i might just spring for some Mikuni VMs
     
    Alipture, Nov 4, 2015
    #28
  9. gainey

    gainey Active Member

    Messages:
    89
    Likes Received:
    39
    Trophy Points:
    88
    Joined:
    Feb 19, 2015
    Gender:
    Male
    Location:
    port macquaire
    My Bike:
    Suzuki GSX250
    Wow thanks I will try that if it runs rich couldn't you raise the main needle height in the carbs to lean it out I mean raise the clip 1 or 2 to make it leaner
     
    gainey, Nov 5, 2015
    #29
Page 2 of 2

Share This Page