I have an APC 90cc 4-wheeler when I start it up it goes to full throttle. I have cleaned the carb and sprayed a boatload of PB blaster into the throttle cable. Does anyone have any ideas? Also if I hold my hand over the carb it will idle pretty good but no throttle response

 

I would check the needle and the intake housing for cracks to start with.

 

Thanks. I will check that out

 

Yup...sounds like incorrect needle in slide assembly...or cable routing (if that was altered for some reason)

 

And to be a little more specific, I meant intake boot, not the entire intake housing system.

 

Could the throttle slide be in backward?

 

Sorry I haven't posted before now but the throttle cable had been moved and was holding the barrel float wide open. Moved the cable and it runs like a demon now. Grandson absolutely loves it. Thanks to all for your help

 

Awesome...another happy ending!!