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With about 2200 miles on the bike and maybe 20 fill-ups I've only noticed what I indicate below, twice. I think! Not even sure of that.

Generally, fuel level readings are pretty accurate and consistent, if a little conservative...especially the backward counter when on reserve.

Yesterday, thought I topped off the tank before my trip, then about 20 minutes riding mostly 80 mph on the freeway noticed was down two bars from full on the fuel reading. Although I did get on the throttle a few times, it seemed too soon to be down by two bars. The other thing, when I noticed it, I was on a long incline. Last time I noticed this I thought maybe I didn't top it off...maybe this time too(?).

Topped off again after trip, full readings...normal.

Seems very infrequent thing, and maybe it's correct and just me.

Anyone else notice something like this very occasionally happening?
 

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Interesting. Mine has not done this, yet, and I'm on fairly steep inclines regularly. Will keep an eye on it, now, though.
 

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With about 2200 miles on the bike and maybe 20 fill-ups I've only noticed what I indicate below, twice. I think! Not even sure of that.

Generally, fuel level readings are pretty accurate and consistent, if a little conservative...especially the backward counter when on reserve.

Yesterday, thought I topped off the tank before my trip, then about 20 minutes riding mostly 80 mph on the freeway noticed was down two bars from full on the fuel reading. Although I did get on the throttle a few times, it seemed too soon to be down by two bars. The other thing, when I noticed it, I was on a long incline. Last time I noticed this I thought maybe I didn't top it off...maybe this time too(?).

Topped off again after trip, full readings...normal.

Seems very infrequent thing, and maybe it's correct and just me.

Anyone else notice something like this very occasionally happening?
By any chance Did you keep the key on when fueling.?
 

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It can be a cause of dysfunction of the fuel gauge. I have never noticed it on my motorcycle. It is necessary to say that I look at the capacity having filled the reservoir, then after 180/200 km, having known where I am of my consumption of fuel there.
 

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I haven't noticed any funny readings. Seems pretty accurate so far. I always turn the key off when refueling.
 

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Discussion Starter · #7 ·
Thanks guys, maybe just a quirk of infrequent, perhaps, environmental conditions...or maybe I twisted the throttle a bit more than I thought. ;)
 

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I've seen what you mention but not necessarily on inclines. The top 2 bars drop really quick. I top off a little over the limit when the nozzle triggers the cut off. With this my first bar drop takes longer but the second one follows within a few miles, maybe 10-15. This is without me getting on the throttle too hard. I'm puzzled.
 

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I don't seem to have this issue but I have developed a distrust for its range computation. At certain revs the fuel consumption is higher and lower. For example my tuning of the maps gives a consumption of 3.8L/100km at 5250 rpm and at 5500 rpm it is at 5.5L/100km. I know it's because the map is richer at 5500 but that difference in such a small margin changes the fuel range significantly. So when I am cruising I hold the rpm in an optimal position. The speed is hardly different between these rpm's but the consumption and computed range is recognisable.
 

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I don't seem to have this issue but I have developed a distrust for its range computation. At certain revs the fuel consumption is higher and lower. For example my tuning of the maps gives a consumption of 3.8L/100km at 5250 rpm and at 5500 rpm it is at 5.5L/100km. I know it's because the map is richer at 5500 but that difference in such a small margin changes the fuel range significantly. So when I am cruising I hold the rpm in an optimal position. The speed is hardly different between these rpm's but the consumption and computed range is recognisable.
I don't trust the range calculation, either...on any motor vehicle for that matter. That's why I rely on my manual calculations so that I know roughly how many miles I can comfortably get on a tank and roughly when I need to start looking for a station. That's why I use Fuelly. :nerd:
 

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I had the same (or kinda same) issue just few days ago. I filled the tank full and when I turned key on the gauge was 2 bars down from the start. I checked the range it it was 90 (instead of 174). When I rode for awhile I noticed that gauge drops and now was 3 bars down as well as decreased range. I went to gas station and filled full tank again. And it again was 2 bars down. I was going to visit dealer this weekend
 

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Oh not, seriously, how aim to be to value our Supersport in the eyes of hypothetical buyers, when the latter read a forum where is listed this type of problem which are in fact not really problem. Do not make as here, in France, where everybody always is to complain for nothing.
 
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