Been trying to figure out why my kid's PPXX won't go to high revs right away, but gradually. Talked to the guys at PP and they said that it sounded to them like the valves needed adjustment. Has anyone here done this to one of these little cars & if so, is there a tutorial somewhere? I've never tore into this engine before & don't want to get into it unless I really know what I'm doing 
Thanks,
Tim
Thanks,
Tim
