Originally Posted by
Gem frst
Still no joy think the problem is that's it overfuelling mega and can't find out wy
Try disconnecting the pipe from the vacuum ports on the inlet to the breather at the breather end so that the pipe is open to air. Does it idle happily up high? If so the breather may be blocked. If not, remove the one way valve and repeat. The one way valve may be back-to-front or blocked.
Lee