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Hi, I have a yamaha aerox 2 stroke and I have just changed the piston and now it will only star full throttle but still with full throttle won't rev up at all or even move, any ideas thanks.

You need to do an intro in the new members section before

anyone will answer you. It's considered good manners on

here. Just tell us what bikes you have and where your located.

Sounds like a carb -fuel problem, :eusa_think: did you put it all back correctly, and is the piston in right way, ^ to the front, .

  • Author

I have put the piston in the right way and fuel is getting to the carb and all jets are clear, float is fine, just had new spark plug, air filter and ht cap but still won't rev, it just about starts but only stays running with full throttle but even still with full throttle is revving out to about 2,500 rpm, thanks for the suggestions

Well thats sounds like poor compression , i kno its new, but are rings sealing ,, :eusa_think:

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