3/4 throttle awesome - wot crap

[Rustydog81]

I have a 08 m1000 with y pipe and can, fuel pressure is 42 psi, power valves cleaned, cables adjusted proper, TSS checked, running mint at 3/4 pullin 72-7400 rpm but if I hold it wot bogs bad hits 7400-7600 drops to 65-68 ish. Can see both cyl wet. I have also noticed my servo motor rocks a quarter turn back and forth. But will stay open at 3/4 and no twitchs. So I know that's causing the bog. And its driving me bat ch!t crazy that I can't figure it out
Any ideas or pointers to help a guy out??

 

[bcham5]

clutches ?

 

[Rustydog81]

They seem fine took them apart and cleaned them. Springs and rollers are good

 

[apex88]

Had an 06 M7 with the exact same problem, Servo Motor! Worked fine on a stand, but would fail when driving it, swap one from a buddys sled to test it befor buying a new one.

 

[joekikass]

Run 87 fuel (if your not i will almost guarantee that's it) check power valve cables

 

[Rustydog81]

Always run 87, cables are right and tried the servo change out already. Pulls 7460 at 3/4 and wot it hits that and and drops to 63 -65 ish I guess

 

[CatMan16]

Have you inspected the reeds?

 

[apex88]

Did it ever run good with the can, try the suitcase muffler?

 

[sc800]

Remember a stock 1000's peak horse pwoer is at 7250. With a year pipe and can your making your most power between 7350-7450. Give or take a few.

 

[Rustydog81]

I haven't looked at the reeds, have tried putting putting the suitcase back on no difference. Use to run mint with the can. My guess its gonna be the ECM ,CCU or stator.

 

[marcel.]

I'm having the same problem I just used higher octane fuel and it seemed to have cured it not sure if higher octane gas is good for it or not.

 

[krash]

I have a 08 m1000 with y pipe and can, fuel pressure is 42 psi, power valves cleaned, cables adjusted proper, TSS checked, running mint at 3/4 pullin 72-7400 rpm but if I hold it wot bogs bad hits 7400-7600 drops to 65-68 ish. Can see both cyl wet. I have also noticed my servo motor rocks a quarter turn back and forth. But will stay open at 3/4 and no twitchs. So I know that's causing the bog. And its driving me bat ch!t crazy that I can't figure it out
Any ideas or pointers to help a guy out??

Did you have the flywheel off??? If you did I'd check the timing key it might have fell out. I had the same issu with my M8 when the mechanic knocked the key out when he installed the flywheel back on!!

 

[plio7]

does it almost sound like its missing, and is it fouling plugs at all.......has this same issue with the gf's m6, ran great untill 6500+ rpm, then would sound lit it was missing and start to bog. this would eventually lead to fouling out plugs every 50-60 km's

turned out to be the ECU

 

[Rustydog81]

Im starting to tear it all apart, redoing the top end and crank seals. After the last ride it died and Pto side piston is real rough lookin