as my car is temporarily off the road due to a BREAKDOWN, i've been using the GTR, to commute to & from work, a 90 mile round trip,i don't like using it this time of year at all, i noticed after filling the tank & running it low on fuel the reading is all over the place, i put the range up on the DISPLAY, and it would read 190 miles left, then 100 miles left, it's all over the place, have you any idea how i can get this sorted.
Simply, you can't.
The calculation is based in fuel remaining in the tank and the rate it's been used over the last few miles. A bit of a heavy hand will see the range drop dramatically, but it will recover if you ease off on the gas again.
It's only really useful when you get down to the last 5 litres and the red light comes on to warn you
Agreed, it's not much use when making short journeys, especially in traffic.
I only really use it as a guide on a long run to indicate how urgently or otherwise I need to be looking for a filling satation although in all honesty I'll usually wait until I get the nagging flashing fuel pump symbol.
If I have just refilled to the brim after a bit of urban riding it will sometimes show someting like "127+" but quickly recovers to about 186 after a bit of free running.
I doubt that you will ever coax the true range out of the display, it's something that we have to live with.
Kawasaki fuel gauge readings are notoriously fickle/inaccurate
Be grateful you have a fuel gauge!
Fuel gauges on most if not all Kawasaki's I've owned have been unreliable, much is written about this on a number of different forums I'm a member of
The best way (for me that is) is to fill up, reset the trip meter.... ride until 150-180 miles are recorded and then fill again..... repeat the process
The only time I nearly ran out was in Austria on my GTR when I couldn't find a filling station and managed about 210 miles according to the trip meter before stumbling across a local filling station
The range calculates its average over too short a time period in my opinion - hence the reason the values vary so widely. If you are maintaining a steady speed on a relatively flat motorway, the reading stays consistent (I find that's when it's most useful), otherwise it is overly influenced by how you've been riding in the last 15secs or so rather than an average over a longer period. I tend to only take note of it while I am riding in a way that will likely be typical of the rest of the journey.