Join Date: Sep 2005
Location: Vancouver, BC, CAN
The small tank syndrome
When I first got the K1200S, my fuel level indicator reported 0 at 200km. But when I filled the tank it took only 17.5 L of fuel. I just thought my tank might be smaller due to a manufacturing defect.
After suffering the small syndrome for 4-months, I gathered up my courage and asked my dealer to test the tank's fuel capacity. Dave, my "personal" mechanic emptied the tank, let the fuel level sensor strip dry out for an hour, and reset the fuel level sensor using the BMW Motorrad computer linkup. The BMW software is not very intuitive, and it took us a while to locate the option. I filled the tank up with 19.0 L. And the fuel level indicator reported the max. bars/ full. No problem with the tank; just required resetting the sensor.
I left thinking all was solved. I rode my K1200S for 200km and my fuel level indicator reported 0. And when it took only 17 L of fuel to fill up I knew how to fix it.
Do you know?
My bike was not empty when I rode in originally to the dealership. The indicator reported I had 50 kms to go. And the software got confused.
So, I rode the bike until the indicator showed 0 kms to go. And I rode it for 25 kms more (hey, maybe I'm not small after all). THEN Dave and I emptied the tank, dried out the fuel level sensor for an hour, and then reset the sensor using the BMW Motorrad software.
Now the problem is solved. When the fuel indicator says 0 kms to go, I usually have 5 to 10 kms left. My bike takes 19.01 L. The indicator is out slightly because my fuel consumption changes when I see the indicator down to "30 kms to go". I drop the revs and shift to higher gears. The indicator estimates the "kms to go" based on my consumption before. So I seem to have a 0.2 L to spare at 0 kms.
But more importantly, I no longer suffer the small syndrome.