TB 88 w/ head pops on decell

[smokey11]

My crf 50 with TB 88 and head is popping badly on decell. Plug looks good,choclate brown. I was thinking it might be lean up top. If i went up on the main a few sizes would this help? Just wanted to make sure im on the right track?? Thanks

[Wayward Son]

main jet has no effect when the throttle is closed.

a slight pop on decel is normal.

check to make your pipe is sealed.

does the bike idle well?

[smokey11]

Bike idles and runs perfect, it has a bbr pipe with no spark arrestor. If you ridding it wide open and let of and let the motor slow the bike down it will pop out the exhaust.