So when I'm driving 50 cc my scooter, basically it starts fine and runs fine to a certain point - but if i give it too much throttle the engine bogs down or stalls out or something and i have to let off the gas, and then give it more gas or it dies. It just started doing this, and instead of being able to go the usually ~30 mph, it only gets about 15-20 mph before giving more gas causes it stall out.

It's a pretty new scooter, I bought it in august. It's a motobravo 4 stroke 50 cc scooter.

Anyone have any idea what the problem could be??

:uhoh: I hope Blayne doesn't see this thread, he HATES scooters!

It sounds like the automatic clutch is not working properly

I thought some one was joking.

I mean who ever thought of a scooter with "too much throttle"

Just kidding mate.


welcome to the forums.

it a long running joke about me and scooters.


I'd say it could be fouled plugs or bad fuel too.

Jeffcoslacker would be your best bet. he's got a lot of mechanical experience.

I presume its a carb, as nobody has an EFI 50cc scooter - yet.

Possibly you have some dirt in the carb float bowl or fuel line which is restricting fuel flow. Your bike may have a sediment bowl or a filter in the fuel line, which need to be cleaned out or replaced respectively.

The float bowl should be removable. A bit of carb cleaner and possibly a bit of compressed air wil clean up the bowl and the jet(s).

However, carbs are quite delicate and easily damaged. Be very careful or leave the repair to a professional if you have never worked on one before.

Bogging down can be caused by...

- Air filter is clogged.
- Engine is getting too much fuel.
- Ignition system is giving too weak of a spark to properly ignite the fuel in the cylinder.
- Choke system is not fully opening; which leaves you with a bad air/fuel ratio and can cause too much fuel to be getting into the cylinders.

- Choke system is not fully opening;
Doh!! Thats a good one to check first.

maybe he should upgrade to the 5 port 150cc motor!:banghead:

maybe he should upgrade to the 5 port 150cc motor!:banghead:

OMG Blayne, that is frickin' HILARIOUS!!!! That's why I love ya brother!!!!