carb adjustment

  1. N

    Need help with idle

    I just got my bike back up after a few years and it runs fine. However when I pull the left lever and stop the bike so it idles, the engine gets incredibly loud and starts vibrating hard. I've adjusted the idle pin thing in the carb in a few positions and it's the same. Any advice for getting my...
  2. Raamastak

    Carby Best carb for stock 66cc engine?

    Hello all I hope you are doing well. I've recently discovered I need to buy a new main jet for my stock nt carb (thanks for the help blueoval) but after doing some reading and some people still having problems after re jetting I am considering just buying an all around better carb do you guys...
  3. Raamastak

    Running too rich

    Hello all I'm new here on the forums, after sealing up the air leaks between the intake and carb and intake and cylinder I started to get to Rich of a fuel air mix. After reading Aussie Steve's post about carb tuning I moved the needle adjustment to the leanest point, this helped but I am still...
  4. Liamyz140

    99 carb problems

    Hi guys in need of help iv got a yz140 the phase five edition from ooracing so it’s got a z40 lifted cam etc etc iv currently bought a https://www.ooracing.com/26mm-power-jet-ysn-carb-flat-slide.html Iv currently got a 45 pilot yet and a 100 main jet at first it wouldn’t run at all but iv got...
  5. Liamyz140

    99 carb problems and carb is all of them

    Hi guys in need of help iv got a yz140 the phase five edition from ooracing so it’s got a z40 lifted cam etc etc iv currently bought a https://www.ooracing.com/26mm-power-jet-ysn-carb-flat-slide.html Iv currently got a 45 pilot yet and a 100 main jet at first it wouldn’t run at all but iv got...
  6. S

    HP carb problem

    so i bought one of those hp carbs of ebay. watched a few tutorials and then put it on my bike. it started up and everything seemed fine but after driving a while i noticed that the bike had lost power instead of gaining power. picture of the...
  7. C

    Engine Trouble fuel/air mixture problem

    So I just got a 2 stroke bike and when I try to start it, it fires a few times and then sputters out. I'm guessing its a problem with the fuel to air ratio but I've tried lots of different choke positions and nothing seems to work. I took apart the carburetor and nothing looked out of place...
  8. C

    Weird stuttering issue

    I just got a few parts to make my bike run a little better. The bike ran ok with kit parts but I wanted to open it up a little bit so I bought the high performance carb so I have a little control on what jets I can run without having to drill the NT carb. The problem I seem to have is that...
  9. E

    starting problems

    Hi all Ive recently rebuilt my gas bike. I believe it is a skyhawk GT5 motor that I put on a GX7 frame and wheels. I had to add some spacers onto the throttle cable to stop the outer sheath from moving. Its not perfect but it did mostly solve that part of the issue. The current problem is...

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