Join Date: Sep 2006
Location: Austin, Texas, USA
Sounds to me like either the ignition or F.I. is momentarily screwing up. Maybe an injector malfunction, maybe a spark plug/wire malfunction. A good dose of injector cleaner (Techron), some new plugs and a good throttle synch should improve that. How many mi/km on the engine? If the rivets shear, you will not have any drive at all, I suspect. I don't know if on the centerstand, in different gears (engine off) you could tell anything by moving the rear wheel to the stops, back and forth, and listen up front for any noise.
My original '85 K100 engine ran for well over 100,000 miles with no problems at all.
'17 R1200RS, 2 yrs. 25,000 mi.
'16 R1200RS, 18 mo. 28,000 mi. (gone)
'03 R1100S Boxer Cup Replika 6/200
'85 K100/1100RS, 34 yrs. 326,000 mi.
'05 R1200ST, 8 yrs. 57,400 mi.-3rd deer killed it.
'11 R1200RT, 2 yrs. 30,000 mi. (gone)
'99 R1100S, 2 yrs. 15,000 mi. (gone)
'96 Ducati 900SS/SP, 12 yrs. (gone)
500,000+ BMW miles