its breaking up probably at 10,000rpm & up.No gauges so I cant say for sure.No FI codes.It will rev to redline but just wont pull above 10,000rpm.changed plugs & my gas.Its not the clutch. WTF any suggestions?

The coils maybe? I dont ******* know.Works fine in lots but I took it on the street the other day and thats when I really noticed.

 

check the wire harness right where the rear res was mounted. i never took the bracket off that holds the rear res when i did my handbrake and it chewed a wire grounded it out and made the #1 injector fire at random times.

 

will check into that cause it started shortly after I put the handbrake on.

 

i had to pull back the sheilding to find the broken wire. not saying thats your problem but it could be. if all else fails change the harness and see what happens

 

When I bought my 636 used from a local guy it would do the same thing, I tore the bike down and found a mouse nest under the airbox.....Little bastard chewed throu some wires there and bounced..... Fixed those and everything was good.......

 

I just hope I can get it sorted out.If its rats i'm gonna murder everyone of those little bastards.

 

got a spare harness too

 

it could also be the plug wires thats what was happed to me when they went bad

 

thats the most random,,, and funnest $hit i have ever herd,,, fu,,ck that made my day:YEAH (that is the first time i have ever used that little guy) i think

 

At first I didnt even lift the airbox I just lifted the tank and looked at all the wiring, because it was giving an FI light all the time....Then I notice this piece of string hanging out from somewhere, so I start pulling it and it just keeps comming and comming......At this point Ive pulled like 10 feet of string out of the bike from somewhere under the airbox So I pull the airbox off and there is a big wad of string, grass, newspaper, and other random crap infront of the throttle boddies....When I cleaned that out there was like 3-4 wires all chewed up and like 2 were chewed clean through......Little ****** ate so much I had to extend the wires cause they were too short to connect back together....I hope he choked on that plastic and copper and either died or was shitting blood for a week, and hes lucky he bounced before I found his crib...

 

got 4 spair good coils I will try:YEAH

 

hahahaha

 

there is a plug on the right side of the air box , not connected to the air box but right next to it ,check it they always get loose and cause **** like that to happen.....