air/fuel mix

  1. C

    Engine has no power after break in

    Hi I have a black 80cc engine that I got off eBay. It’s done a 1000km according to my speedometer at 750km I change the fuel mixture from 16:1 to 20:1 after I did that the engine started bogging I got rid of that by replacing the spark plug. But the engine still has a hard time accelerating...
  2. 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...
  3. 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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