Honda CB1100 Rough Idle Solution

[1973cb750]

Thanks for the suggestion. I will add it to the list of possible next solutions should my latest fixes in post #34 not hold up.

I have never had a fast idle problem. My idle problem has always been: oscillating from 1100 RPM, then down to 700 RPM, and back up to 1100 RPM every second or two. This would continue for as many minutes as it took for me to return home and shutdown the bike.

I’ve been experiencing this same issue with the 1100-700 idle on my 2014 CB1100. Someone mentioned low idle could be vacuum leaks so I started checking tubes, hoses….when I discovered that all 8 screw clamps that connect throttle body to intake were loose, I’m talking 8-10 turns each before they felt like they were tight. Time will tell, but ever since idle has been steady at 1k, no oscillating. Maybe combination of heat and vibration causing leak???
Will try to attach pic of 1 side which will show 4 of 8 screw clamps that I’m referring to.

I’ve been experiencing this same issue with the 1100-700 idle on my 2014 CB1100. Someone mentioned low idle could be vacuum leaks so I started checking tubes, hoses….when I discovered that all 8 screw clamps that connect throttle body to intake were loose, I’m talking 8-10 turns each before they felt like they were tight. Time will tell, but ever since idle has been steady at 1k, no oscillating. Maybe combination of heat and vibration causing leak???
Will try to attach pic of 1 side which will show 4 of 8 screw clamps that I’m referring to.
had that happen on alot of my bikes good catch