Back fires through the carb real bad, was an on and off issue for a week now wont come out of it, idles fine but any throttle its fights and pops and bangs through the carb.

tried new fuel
unplug black wire for over ride
spark tester shows good spark even when poping
has 160psi
slide diaphram looks good even manually lifting it while running doesnt make a difference

choke doesn't make a difference, air box lid on or off no difference, airfilter or not no difference