05-10-2020, 02:52 AM
(05-10-2020, 02:36 AM)zirconxi_imp Wrote: Hi All, interesting thing I encounter today, I ran my CB till the tank almost empty and pump in 12Liter of fresh RON97 fuel. I believe the '13 CB tank is only 13L.. Previously the bike was running on RON95 fuel. Right after I refuel, my bike started to run a bit high on idle on a warm engine (about 1250rpm). Then I did a throttle position reset and now the idle is fluctuating between 1000 and 1100, jumping up and down quite actively. Before this while running on ron95, the idle was stable at 1050. After the bike cold down I wash the bike and after washing, the idle become stable at 1050 again.
Is the ECU learning to adjust to new fuel? or I ran the tank till too low and fuel pump is hurt? or the mysterious idle unstable issue?
Does our CB have any knock sensor that will adjust Ignition Timing based on knock sensor??
I can't answer any of your questions, but several CB1100 owners, myself included, reported that the high idle started immediately after filling the tank after a substantial ride, meaning bike was fully warm if not quite hot. I don't recall if the gas was different that first day. The idle spike I experienced was more in the 1500-1700 range, and once started, it wouldn't come down from that. Next ride, all would appear to be ok for 5-10 minutes, then high idle would start again. Over time, mine morphed into low idle issue as well.