Zuma 50 scooter running way too rich

SOURCE: oil out of tail pipe

Hi,
This is not uncommon.
Things to check first would be your fuel mixture. You might be running a bit rich. You should be using a mix of 3.5 percent synthetic oil.
Being a 2 stroke, the tail pipe cartridge needs replacing from time to time, as it does collect oil with time. If the bike is a bit noisey change the packing.
Always remember that there is oil in fuel used on 2 strokes.
Lastly check the type of oil you are using. Mineral oil does tend to be a bit messy as the mixture requires around 5 percent oil.
Most off road stores now keep good LOW SMOKE oils such as Motrex.
Stick to good synthetic oils !
Cheers
Jon

SOURCE: What is the spark plug gap for a 2005 Derbi Atlantis 50cc?

Gap the plug at .028 to .031.

SOURCE: 1989 Zuma, just rebuilt carb to OEM specs, turned

answered

SOURCE: cant get my 50cc scooter to fire up-no spark. any

• Do you see spark? If not, check the side stand kill switch. It kills the engine so that you don’t start out with the side stand down. If broken or out of adjustment, it would kill the spark. Check for a broken wire at the side stand switch and coupler. Try moving the side stand kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it.
• Is the handlebar kill switch on? Is it shorted out?
• Check the fuses.
• Check the operation of the ignition switch and all kill switches with a volt ohmmeter. Check the wiring harness. Did a wire come unplugged? Are all wires clean and with solid connections? Any abraded or pinched wires?
• Is the bike in neutral and the neutral light is lit up? If no neutral light, check the neutral switch and neutral switch wire on center or side casing.
• If still no spark, get CDI system and coils checked at the dealers shop.

SOURCE: My Yamaha jog 2002 scooter 50cc, 2 stroke run rich

have your carb cleaned and balanced, replace the piston rings and decarbonize the block that should do it, and also you can change your spark plug just incase

Testimonial: "Thank you will give it a go. "