mylovelyhorse
Registered user
1999 R1150GS, 110,000 miles
Over the last few months my bike has been 'stuttering'. The RID flickers and revs drop. Sometimes this happens the once, sometimes as a series. Sometimes, however, the RID doesn't flicker when the engine stutters. It seems to happen when the bike is hot in the main. It also seems to most often occur around the 4-4.5k rpm mark, although that may be just my impression. It also seems to happen a lot more on acceleration (e.g. overtakes) but can occur when cruising steadily.
Another oddity is irregularity in the fuel level shown on the RID. after a stuttering event, quite often the fuel gauge may show a different level - e.g. suddenly flicking from nearly full to half empty and possibly then back again or to another value after another stuttering event. May be irrelevant but I have a fuel balancer installed in the tank.
After a little advice here, I changed the ignition unit / cable that runs from the switch to the main loom for a secondhand unit from Motorworks. When the symptoms persisted, I changed it again for a brand new unit from BMW.
I've not ridden the bike more than a few times in the last couple of months but this week I have started commuting again.
I filled the tank on Tuesday morning and the bike refused to start for a few mins afterwards. I thought that the tank might have a breather problem but (I had filled it right to the brim) these were some drips from the overfill tube and when I opened the tank there was no tell-tale hiss.
The next time I fuelled up, no problem. Yesterday evening I stopped to bung a few litres into the nearly empty tank, started up the bike and pulled away. 50 yards later the RID went blank and engine cut out. I pulled off the dual cabbageway I was on and parked up. The fuel injection wasn't pressurising and the RID stayed off, as did the other dash lights.
After about 10 minutes, I tried again. RID came on, bike fired up straight away. A few stutters on the rest of the trip (30 or so miles) but not too much.
Does anyone recognise this set of symptoms?
Any thoughts on what might be the best way to investigate?
My plan was to commute from the South coast into London every day but that looks rather unlikely if I can't resolve this situation :-(
I shall be changing the fuel filter today just in case it's somehow related to a blockage and I'm going to remove the fuel balancer device just in case that is something tondo with it, but frankly both actions are grasping at straws.
Cheers
mlh
Sent from my iPad using Tapatalk HD
Over the last few months my bike has been 'stuttering'. The RID flickers and revs drop. Sometimes this happens the once, sometimes as a series. Sometimes, however, the RID doesn't flicker when the engine stutters. It seems to happen when the bike is hot in the main. It also seems to most often occur around the 4-4.5k rpm mark, although that may be just my impression. It also seems to happen a lot more on acceleration (e.g. overtakes) but can occur when cruising steadily.
Another oddity is irregularity in the fuel level shown on the RID. after a stuttering event, quite often the fuel gauge may show a different level - e.g. suddenly flicking from nearly full to half empty and possibly then back again or to another value after another stuttering event. May be irrelevant but I have a fuel balancer installed in the tank.
After a little advice here, I changed the ignition unit / cable that runs from the switch to the main loom for a secondhand unit from Motorworks. When the symptoms persisted, I changed it again for a brand new unit from BMW.
I've not ridden the bike more than a few times in the last couple of months but this week I have started commuting again.
I filled the tank on Tuesday morning and the bike refused to start for a few mins afterwards. I thought that the tank might have a breather problem but (I had filled it right to the brim) these were some drips from the overfill tube and when I opened the tank there was no tell-tale hiss.
The next time I fuelled up, no problem. Yesterday evening I stopped to bung a few litres into the nearly empty tank, started up the bike and pulled away. 50 yards later the RID went blank and engine cut out. I pulled off the dual cabbageway I was on and parked up. The fuel injection wasn't pressurising and the RID stayed off, as did the other dash lights.
After about 10 minutes, I tried again. RID came on, bike fired up straight away. A few stutters on the rest of the trip (30 or so miles) but not too much.
Does anyone recognise this set of symptoms?
Any thoughts on what might be the best way to investigate?
My plan was to commute from the South coast into London every day but that looks rather unlikely if I can't resolve this situation :-(
I shall be changing the fuel filter today just in case it's somehow related to a blockage and I'm going to remove the fuel balancer device just in case that is something tondo with it, but frankly both actions are grasping at straws.
Cheers
mlh
Sent from my iPad using Tapatalk HD
