starting

Hey guys I have a 2 month old skyhawk engine. I use a mikuni carb, expansion chamber, 36t sprocket, supercharge cdi and a few other minor mods. I recently shaved some of the head to raise compression, and ended up raising it by about 30psi. Since then, my motor has become a bit more difficult...

Im new to riding with a small engine and having a grand ole time with it... i recently bought a used huashengtaishan 38cc 4 stroke which i mounted on my mountain bike with a friction drive kit and all was fine and dandy until i changed the oil. I followed the instructions on the sticker which...

Hey all, So i'm not sure if this is the right forum for this so if its not direct me elsewhere… anyway, I'm having issues with my motorized bicycle. I peddle it to get started but when i release the clutch and give it throttle nothing happens. It sounds like the engine is going but it's...

I dug around on this board for a thread describing the exact symptoms my bike is displaying and came up null - though I am suspecting my fuel/oil ratio to be the culprit. That being said I'm going to describe the problem as best as I can to see if it sounds familiar to anyone: The...