My 150cc chinese scooter starts stalling when i go up to 50 mph. any help

SOURCE: I have a Roketa 150cc Sicily Scooter (2006). It

Here's the deal. I have never even heard of your bike brand but I have 18 years in bike repair. If you promise not to give me anything less than a "helpful" rating I will tell you how to do the fix based on the assumption that the bike has a standard carb and not a CV carb. The standard carb has a top "cap" that unscrews from the center of the carb body.
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ALWAYS have a fire extinguisher on hand when working on carburetors.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side or bottom of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine. Now unscrew the top cap and pull the slide out of the throat of the carb. When you re-install the slide, be sure the long notch on the side of the slide lines up with the small pin inside the throat of the carb.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
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Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Before putting the slide back in the throat of the carb, move the clip on the jet needle one notch lower. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

Please rate this solution. Thanks!

SOURCE: My 150cc Lifan(Chinese) scooter kickstart won't

It sounds like the gear inside the Left cover is not linged up right i have the same motor and this web site bailed my out of this problem go to www.scootdawg.com it is a great frourm to find all the manual and repair how to fix your scoot For your info the motor on your scooter is known as a GY6 engine parts are all over the place. www.paertsforscooters.com is where i get some of my parts. let me know if you need any more help.
Best Reguards

Larry

Testimonial: "Thanks Larry, I waill check it out!"

SOURCE: i have a 2007 keeway arn 150cc scooter i got alot

first of all, was the bike running, then parked for a signifigant period of time? if so, the first thing your going to want to check is the fuel system. theres a fuel hose running from the fuel tank to the carburetor. remove the fuel line from the carb to check the condition of the fuel. fresh gas has almost a clear look. if it appears to be fine, then proceed by checking the carb to see if there is fuel in the reservoir. at the bottom of the carburetor, there should be a small screw. turn it out counterclockwise to see if gas comes out from one of the overflow fittings on the carb. if it begins to leak, then you most likely have enough fuel in the carb to start it. if it comes out of the hose looking dark, or smelling kind of funny, then youll need to clean the fuel system. to do that, you must drain all of the old fuel, flush the fuel tank a bit with fresh fuel, refill it with fresh fuel, and also clean out the carburetor. if youve never done this before, i would reccommend having a technician do it for you. lost parts or mis-adjusted carburetors can not only cause mechanical damage, but also be a potential safety hazzard due to performance problems. if the fuel looks and smells fresh, then your going to want to check for ignition next. remove the spark plug from the cylinder head, attatch the boot to the top of the plug, make sure the electrode end is touching a good grounding point on the engine, and press the start button. BE CAREFUL on this step. if the plug sint grounded well, it could lead to you getting an electrical shock from the ignition system. its a good idea to hold the spark plug or boot with insulated pliers during this step, just as a precaution. while the engine is turning over, watch the gap on the spark plug end to see if there is a noticable spark. it should be fairly easy to hear as well. if there is spark, then your ignition system is most likely in good condition, so move on to the next step. if there is no spark, try this process over with a new spark plug. if the new one still doesnt spark, there is a problem with one of the components in the electrical system, and that should be further diagnosed by a certified technician.
I hope this helps you out a little bit. these are the first things that I would check. If you know the fuel system is in good condition, and you can see that there is a good ignition source, then you have a mechanical problem that would require more information to attemp to diagnose. if you have any questions, feel free to contact me. Ill be happy to further clarify or explain anything that I mentioned here.

SOURCE: I have a 150cc jonway scooter. When I open it up

I found that if I run 87 octane gasoline the engine accelerates up to full speed without the skipping and bogging down at any point it is running. It is worth trying. also try putting some "Sta-bil" fuel stabilizer in the gasoline - it has the ability to keep the carbureator cleaner. Not just during the time you are storing it, but rather all the time.

SOURCE: Intermittent not starting Vento motor scooter...

You have what thay call a GY6 Motor it'sa honda knock off clone Chances are you eather need a CDI box Or Coil both prety cheep you have no points or condsider on this bike i have the same motor go to www.scootdawg.com form for for all the info you need including how to test them. one other thing check you valcume hoses and fule filter as well

Testimonial: "You were right on with the cdi...I had replaced it shortly before receiving your message...Thanks very much..JC"