My go kart has a little 4HP B&S engine on it. its really old too. and I cant get it to start or stay running. i have good spark, and fresh fuel. new spark plug and new throttle cable. I cant start it unless I saturate the carburetor with starter fluid and prop the rear wheels up and put it at full throttle. the clutch works on it, but I cant start the engine unless it is at full throttle. 3 out of 10 times it will stay running. and when it does run it is really really rough. itll sound like a loud lawnmower for a few seconds and then a loud pop or two over and over. when i get it running i can back the throttle down a tiny bit at a time until the clutch disengages and i can set the cart down. When I go to sit on it, if the engine stays running, the engine will die as soon as I give it gas. It will move a tiny bit then just die. what could be my problem?

I have not built anything yet I just want to know how to gear it to drive the rear wheels. I’m making plans

just wondering if an engine we have would work for a go cart. I don’t know the wheel size yet, but i would imagine something like 12" rear wheels at the most.

i have a go cart that is a 2 wheel drive (rear wheels) it is built very sturdy and has suspension. i would like to know if it would be possible to put any kind of small dirt bike engine on it (50-150cc) and if so how hard would it be to hook up and mount.

The problem says "The engine sprocket of Kyle’s go-cart is 4 cm indiameter. It’s attatched to a 20-cm rear axel sprocket that drives the go-cart." Part a says "Find the angular velocity of the rear axle when the engine is turning 4200 rpm" I understand part a, but part b says "Find the speed of the go-cart in km/hr under the conditions stated in part a if the rear wheels are 35 cm in diameter." Aaaahh, I’m confused. Thanks!
Okay, I’m not asking for somebody else to do it for me, but for somebody to explain it to me. What’s wrong with asking for help?
Thanks to the people who helped, though. Sorry.

I’ve got a frame and an old push style lawn mower I’m about to rebuild. I’ts pretty weak (5.5 hp briggs) but I don’t have much of a budget. The biggest dilema is getting the power to the rear wheels with the vertical shaft. I was thinking chain driven, little differential if they made them, rack and pinion gears, or maybe some kind of front engine with a driveshaft thing. I’ve been thinking about it a lot and I’m stumped, any ideas?

Thanks