jsouth
Member
My 2000 R1100RS has about 91,000 miles on it and has always surged a little and vibrated a little more than I think it should. I have owned it for the last 30,000 miles and do my own work. I am an experienced home mechanic and decided to tackle a "ground up" throttle body sync. (In hindsight, like a freaking idiot....)
I have read all the IBMWR.org articles and have a TwinMax at my disposal. I got a wire into the red/white wire terminal and can read the voltage at the throttle position sensor. I got it set to 0.008V at no throttle opening (throttle stop screw backed off completely). I followed the advice to not rotate past the 0.008 (or lowest) reading. I tightened the TPS at this point. Then I used the throttle stop screw to obtain around 0.350V on the TPS and locked the throttle stop screw. So far, so good.
I rotated the large brass air bleed screws all the way in and counted turns. Both were out more then 2.5 turns, but I set them at 1.5 turns out, as the instructions in one of the IBMWR articles suggested.
Now I'm trying to get the RIGHT side throttle stop screw set and I can't get the bike to idle . It's trying to idle very low, and I would have to back out the bleed screws substantially in order to get it to idle, and I wonder if I will get an accurate setting of the right throttle stop screw in that case.
QUESTIONS:
I was a little surprised at how far I had to move the TPS to get to the 0.008V reading. I could see space at the stop screw, so I know I was reading a closed throttle plate.
Thanks in advance for any help or moral support!
I have read all the IBMWR.org articles and have a TwinMax at my disposal. I got a wire into the red/white wire terminal and can read the voltage at the throttle position sensor. I got it set to 0.008V at no throttle opening (throttle stop screw backed off completely). I followed the advice to not rotate past the 0.008 (or lowest) reading. I tightened the TPS at this point. Then I used the throttle stop screw to obtain around 0.350V on the TPS and locked the throttle stop screw. So far, so good.
I rotated the large brass air bleed screws all the way in and counted turns. Both were out more then 2.5 turns, but I set them at 1.5 turns out, as the instructions in one of the IBMWR articles suggested.
Now I'm trying to get the RIGHT side throttle stop screw set and I can't get the bike to idle . It's trying to idle very low, and I would have to back out the bleed screws substantially in order to get it to idle, and I wonder if I will get an accurate setting of the right throttle stop screw in that case.
QUESTIONS:
- Should I go ahead and open the large brass air bleeds enough to idle and then go back and forth between adjustments to the right throttle stop and the air bleeds as I get closer to optimal settings?
- Or should I open the left throttle stop screw for a reading of 0.370V or higher at the TPS (but less than 0.400V) in order to achieve a higher idle before making any more changes on the right?
- Or have I screwed the pooch?
- Any other tips on getting closer? I will have more time tonight and this weekend to devote to this project and I have a trip next week.
I was a little surprised at how far I had to move the TPS to get to the 0.008V reading. I could see space at the stop screw, so I know I was reading a closed throttle plate.
Thanks in advance for any help or moral support!