My turn to post engine problems. The bike as a MC21SP, supposedly done around 2000km on the top and bottom end. It was rebuilt by the previous owner (a former forum member) witha fresh top end, and a crank from TYGA. It's running a drilled airbox, jetted up two sizes from stock on mains and pilots, and JHA GP style pipes. The RH pipe has been dented inwards, and been pulled out to resemble a state that it originally was.
When I start the bike, the bike runs fine. When the bike gets warm, the bike will run for a little while, then start misfiring on the right cylinder. If the throttle is not holding up the revs, it will just drop and stall.
Carbies swapped over to another bike and they ran fine. The exhausts were swapped over to that bike and it ran no problems on that as well.
I've done the gasket check by spraying engine started on the base, barrel and head gasket and nothing happened (revs stayed the same).
Plugs appear to be fine, and are gapped properly. I couldn't see any damage to the piston crown, and I'm in the process of borrowing a compression gauge to do a compression check.
My mate suspects it is fuel fouling, but i'm at a loss as to the reason why it is fuel fouling. I would also like to know what other things I should suspect and check.
Any ideas on what I should do next? Many thanks for the suggestions too
