Engine breaks up when I get on the pipe

[robert0762]

Pro circuit pipes

K&N filter Stock box no lid

No internal mods

27.5 290 mains

Sea level 75 deg

 

The bike revs very clean when in nuetral but when I ride it as soon as it hits the pipe it breaks up no matter what throttle pos I am at

Carbs are very thoroughly cleaned. Taken completly apart blown out with cleaner and compressed air.

Just lookin for some sugg

I'm gonna start digging 2morrow

Would reeds cause this???

[rubberneck]

Did it just start doing this all of a sudden, or was it after you made the mods you listed? If it ran fine before and just started doing it, I would look at the stator and electrical. If you just installed all the mods and it started, you may be a little lean. I havent jetted pro circuits, but with T5s and K&N, 290s are not big enough at sea level.

EDIT, have you checked for air leaks?

[robert0762]

Did it just start doing this all of a sudden, or was it after you made the mods you listed? If it ran fine before and just started doing it, I would look at the stator and electrical. If you just installed all the mods and it started, you may be a little lean. I havent jetted pro circuits, but with T5s and K&N, 290s are not big enough at sea level.

EDIT, have you checked for air leaks?

 

 

I started at 340 and went down. it ripped ass then the weather went from low 60 s to 90 and it was doing it so after playin with jetting , going from rich 360 to lean 270 i have ruled jetting out as the prob. I have a brand new coil on. I'm goin to look at reeds and ohm the coil 2morrow . Do I need to ohm just the pickup or the charging coil too. that just made me think of something when i first start up only one light is on then after i rev it a lil both come on and stay on

Edited May 1, 2009 by robert0762

[lowbuckracing]

Change plugs,run full throttle and check again....post pic...check ur flywheel gap,make sure all wires are on your spark plugs tightly..Is there more crackling on one side of the pipe?synced the carbs?any new mods?Air filters dirty?More info...

[robert0762]

I found out today that my pick up coil was gapped too much. When I bought the bike one of the screw holes was broken off. So I juat ordered an adjustable plate so I can go +4. Icant wait to see how she runs I just got my pipes on and jetted right so this will really help me out.