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  1. XR
    Hi All, I've just recently aquired an 93' XR650L and it didn't run well initially. Symptoms where popping once in a while while driving, but also when standing still, dropping gas to idle, it ran for around 15 secs and then one pop in the exhaust and boom stop :-) I reckoned it was running to...
  2. XL
    For a 74 xl350e any experience or suggestion on which carb to use I am having a hard time locating exactly which carb to use. There seems to be a few variations of the mikuni vm38 and the 38 mm one from kelhin I don't need to use the original choke cable. I just can't afford the 200-300 original...
  3. Chatter
    Do any of you guys have any experience in setting up a Mikuni VM26 carb? My sons Yamaha DT 125 LC3 does not want to tick over without cutting out. On further inspection of the carb we have different jets in it. and I think that might be the problem. As you can see in the photo its supposed to...
  4. Dominator / FMX
    By junking the CV carb and fitting a flat slide :D even though its still running lean as i'm waiting for some jets to arrive the bike is running so much better its smoother no miss on tickover and allot more responsive, I bought what was advertised as a Mikuni TM40 but it turned out to be a TM38...
  5. XR
    Hi has anyone used a Mikuni vm 32 On a xr250 . Need an idea of jet sizes etc .
  6. For Sale / Wanted
    Looking for a TM 33 pumper carb for my 2004 XR250 Thanks
  7. XR
    looking for a pumper carb that will fit on my 2004 xr250l (the one with the starter motor) mine has the mikuni 88 CV carb because of the starter the carb bowl cant be too low. any ideas.
  8. Dominator / FMX
    Getting all technical now. Has anybody played with a 1 wire O2 sensor? I've read about tuning houses putting a sensor into the downpipe of a carburated engine to help tune the carburettor (I think it was mentioned in the thread on this forum about a Mikuni flatslide). I was wondering about...
  9. XR
    Hi, as I mentioned in another thread, I have bought my second XR650R. It is not standard. It has a full FMF exhaust, Mikuni 40mm flatside pumper carb, stage 1 hot cam and a modified air box. It starts and runs fine for (what seems like) as many miles as I want as long as I don't come down to...
  10. Africa Twin
    Hello, does anyone know if the Mikuni fuel pump kit on a XRV 650 is as good as or better than the original and of any advantages and disadvantages? Thank you.
  11. Bikes For Sale / Wanted
    Honda XR400R 2003. 8421km (5231 miles). MOT (12 months) and Tax (until November). Very good original condition. Only significant modifications are Mikuni pumper carb – a brilliant upgrade that makes these bikes much more fun to own - and K&N filter. Spares and extras included: Haynes...
  12. XR
    Hello Community. I'm Omer,22years old and im from Austria. I bought the bike 2 years ago and im very happy to have a XR The Piston rings are very bad of my Bike and dont want to buy the standard piston 85mm and new piston rings. Now i want more power and i just bought today the Big Bore Kit...
  13. XR
    I've just bought a 2004 XR 400 from a good mate who has had it from new It's fitted with a Pumper carb - not sure if it's a Mikuni or Edelbrock yet? Is it a good carb mod & will the bike perform better? Only XR 400 I've had before was a new one in 1998 & it seemed to be fine stock Standard...
  14. XR
    Hi do,s anyone no where i could get a mikuni tm 40 carb for a xr650r in the uk or if anyone has one for sale thanks
  15. Dominator / FMX
    The carb on my bike is either a hsr40 or tb 40 with large K&n Pod filter and I have just noticed the main jet is a 145. This seems way too small to me and I have noticed the plug is a tad white . Has anyone else got a a different carb fitted to thier Dominator and if so what Jets ?????
  16. Africa Twin
    Hello everyone, do you know where could I find a threaded vacuum connector to connect a fuel pump like mikuni or similar? thanks Seth
  17. XR
    Hi everyone, I have a stock exhaust on my 2003 xr400 but the baffle has been removed. The bike has a mikuni carb and runs brilliantly but it is just a little too loud. I am keen to keep the stock exhaust but is there a good way to quieten it down that will not affect my current setup? Thanks B
  18. Dominator / FMX
    Hi just fitted mikuni tm 40-6 to my 07 fmx,problem is ive now got a massive hesitation/flat spot when the throttle is cracked open,could disconnecting the throttle position sensor alter the ignition timing?.Thanks
  19. Mechanical Advice
    The lads little Chinese 125 starts on the button every time but when on choke the revs rise and fall ranging between 4000 revs and almost dying (occasionally doing so) in 2-4 second intervals. He has got into the habit of hitting the button and riding of as it pretty much wont idle till warmed...
  20. Mechanical Advice
    The lad's 125 isn't idling as sweetly as it could and the choke is a bit all or nothing. It's either at 4000rpm or nothing. Once it's warmed up it idles ok but can still be a bit fluffy and the revs seem to take a wee while longer than I'd expect to decay. Now the engine is a suzuki clone and...