Thunderbird 900 Keihin Carbs

Discussion in 'Thunderbird' started by Graham MacKenzie, Nov 28, 2021.

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  1. Graham MacKenzie

    Aug 22, 2015
    I have been suffering Carb problems with my 2001 Thunderbird 900 for a good few months now. I've had great response from folk on this Forum but sadly the problems persist. Stuttering at low revs, cutting out completely at times, and the only way to keep the engine going was to keep it above 3000 rpm. Not recommended in traffic.
    I handed the bike to a Carburetor specialist who stripped them right down and found that they are, " beyond economical repair due to excessive wear ". The bike may be 20 years old but only had 36000 miles on the clock and is in general good overall condition.
    I've tried to locate replacement Carbs but there doesn't seem to be anything suitable. What I have traced is either poor condition, or exorbitant prices with no guarantee of working order.
    Can anyone help ; there must be something suitable out there, even off another Triumph triple.
  2. capt

    capt Elite Member

    May 8, 2016
    western Australia
    Check manifold stubs , as 20 years old they would have begun to crack ! Symptoms are the same !! Won't idle/run under 2 or 3 thousand RPM !
    Cracking leads to manifold pressure leaking and lean running ! I had 6 yrs old Trident 161,000+ km , carbs were worn but ran fine until higher RPMS , 6,000 +.
    New slides and jets/needles sorted !!!
  3. sprintdave

    sprintdave Nurse,he's out of bed again

    May 25, 2014
    Have you tried too but think they are mikuni not keihin specialists.
    Also if you use Facebook join the t300 group. Paul Messenger does repairs to carbs for the group and does an amazing job. Worth asking him.
  4. t552

    t552 Senior Member

    Nov 17, 2014
    Bristol UK
    Carbs is Paul Barnett. We both have our little expertise. I make stick coil kits and YSS shocks.
    • Useful Useful x 1
  5. sprintdave

    sprintdave Nurse,he's out of bed again

    May 25, 2014
    #5 sprintdave, Nov 30, 2021
    Last edited: Dec 1, 2021
    Sorry mate, I was close. My bad. Lol

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