SirDilbert

Thanks for your help guys I will keep you posted as to what's happening as there's a couple things mentioned we hadn't even thought about. many thanks and stay safe

When it's up on the stand the back wheel runs well it even sounds like she wants to take off.

Must try the Reed valves as there's a brand new carb put on thanks for your help hopefully get to the bottom of it soon.

Recently bought a wee Peugeot speedfight 2 50cc scooter. I was told when it was bought that it needed clutch and rollers which I've replaced. She starts first clip and revs up but still now power. I've changed air filter petcock and anything else we could think on. It starts and and idles but is seriously lacking in power If anyone can shed any light as to what the problem might be I'd be truly grateful.