Any ideas to start the search?

My 2005 636 has been a solid racer, but at saturdays practice at homestead, the RPM would "hang up" at 8-11K out of corners, it would "pause" there, bike kinda bucking not unlike that momentary fuel starvation feeling, and then it would resume RPM climb to redline. I would upshift and would experience the same 8-10/11K RPM lag or choke point, followed a second later by resumption of power/use of power band.

Stock motor. Any ideas? Thanks!

Drew
Ft lauderdale FL

 

was it sitting? as if did this happen after your first tune for the summer?

 

It had not been run on a track for almost 2 months as we installed new equipment (shock, etc.)...This RPM hang up did not occur on the first 3 laps or so, seemed to show up only after it was wrung out / heated up....?

 

sounds like a fuel issue, might be a bad fuel pump gettin ready to go out.

 

I am having the same issues with my 04 zx636r. I have tried tuning with a PC3 and also replaced the ECU however no luck.