Originally Posted by
houston
sounds like a low compression situation
you can try to drop head shimming to .70mm or send it in to raya racing for a resize
how much of what fuel ?
is you r filter system up to snuff?
has it sucked dirt ?
have you always ran it hot?
Thanks Monty I'll try a re shim, Byrons 30% only. It usually runs a bit cooler than that but it's been 100 degrees+ here. I swap my filters after each run but will have a good look inside when I pull it apart.