Why is my 2006 Honda Metropolitan cutting out at full throttle?

When I give my moped full throttle and open it up all the way it just sounds bogged down plus the acceleration is terrible and I have to gradually give it has very slowly. We replaced the air cleaner, fuel filter, coolant, oil, put premium gas in it and also purchased some injector cleaner but it still does this. We thought it was the fuel filter but it hasn't changed it (very much). Any help is appreciated thanks in advance!

Dirt in jets… Best to have a bike shop clean to prevent damage. Should not cost more than fifty bucks!

It sounds like either the carburetor needs adjusting or cleaning. I'm not familar with that engine. When did it start doing this? Have you adjusted the carburetor? It has an automatic choke, is it working? If it has low and high speed jets turn the low speed jet out a quarter turn and see if that helps. Once it transitions from low to high rpm adjust the high speed jet. Premium gas won't make any difference if the engine is designed for lower octane. Injector clean may help but not often. If it can't be adjusted to run better a carburetor cleaning would be the next thing.

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