Missing please help!!!

[WarRider]

I was out riding on sunday (eatin some harley's) When out of the blue my bike developed a miss in the front right cylinder. It only shows up above 5000rpm but then stumbles bad . Has anyone had or heard of this ? Plugs all look good. need ideas thanks Mike

 

[naughtyG]

How do you know it's the right front cylinder? Are you seeing a weak spark?

It could be dirt in a carb, or it could be electrical. Make sure to check all your HT leads and spark plug caps. It can help pulling the HT leads out, cutting a 1/4" or so off, then rescrewing the caps on.

 

[Hatter]

Mine did the same thing after some high speed runs. Its trash sucked in the carb, Seafoam took care of mine, it took several tanks to get it out completely.

 

[RaWarrior]

Had a similar issue on my Yamaha 4stroke snowmobile. Was screaming across a lake and suddenly lost power, only running on 3 cylinders much past 1/2 throttle. Idle and mid was OK. I actually cleared it by putting the choke on full and holding it WOT for a bit. After like 10 seconds, it suddenly "popped" and screamed to life running great, and it's been fine since.

 

[WarRider]

thanks all I'll let ya know

 

[WarRider]

cobra pipes plugs look good

 

[one2dmax]

cobra pipes plugs look good

But perform like ****.