air filter
  1. L

    Removed Air Filter - Running Too Lean?

    Hey Everyone, I am constantly tinkering with my first build - I can't seem to get it to run quite right. I am running a YD100 engine with an NT carb mounted to a Mongoose dirt bike. I've recently done some modifications but now my bike runs TERRIBLY. Can't even crack 5 mph on flat ground and...
  2. KC Roy

    runs better with air filter off?

    hey guys thanks for all the good info on this site. i've put together my first motorized bike a couple weeks ago. breaking it in and tweaking things here and there. it runs pretty nice but seems to cut out or surge/bog down a bit when i get going at the high end. it idles great, will rev just...
  3. J

    Engine won’t idle and stops with clutch disengaged

    Problem-first start** -engine won’t idle but runs with 1/2 accelerator with clutch engaged - soon as clutch is disengaged while riding the engine sort of stalls an accelerating does nothing - the engine sounds like it is either starving or flooding maybe ? Things to consider ? -Bike came...
  4. spiderskzes

    sbp air filter huasheng

    Sorry if this is a dumb question. But do i need to adjust my air/fuel mixture after installing the sbp air filter? My bike was idling fine but was boggind down for a couple seconds when i had it at full throttle. I also have a straight pipe exhaust. thank you .spr.
  5. T

    Fuel in air filter and carby problems :s

    I am a beginner when it comes to engine kits. I bought a 66cc two stroke Chinese generic brand kit, and I upgraded the carb. My old carb died on me so I bought a new one. Both of the carbs had the same problem though. The fuel ran through the carb but the air filter also got drenched in fuel...