if your bike is sputtering between 1-4k and spark plugs 1&4 are fouled its most likely your fuel pressure regulator. i spend $80 to have the dealership tell me it was the fpr when all along my buddy was tellin me that. it takes about 10 mins to fix its just below the airbox on the lefthand side and if you know someone at a dealership its $50 otherwise its $90some. well just thought id share my knowledge of a solution to a simple problem....hopes its of some help to some of yall.

spoonher

 

Good info, thanks. I'll be changing plugs soon, and I'll be watching for it...