ok, so the warning light comes on, guage reads -1/4 tank. I toss $10 in, now it shows 1/2 full.Bike sat all day yesterday.
Head out today, playing on the backroads.. light comes back on. I'm thinking no way no How have I used that much gas in only acouple threehours....worried a bitgoing to find a gas station, but no problemTotal fill, right to the very top? $13.85. I still had 1/2 a bloody tank!!! What's with the fool guage? Is there a way to check it? Fix it? I'm hoping this is just a one-time glitch!
When I parked it, it was still showing a Very full tank.
( Least now I know, at present gas prices, my bike holds $23.85 worth! ...lol)

 

Motorcycle fuel gauges are notoriously inaccurate, due mainly to the shape of the tank. It is almost decorative in nature in a lot of cases. The best thing to do, is to do a series of runs from full, in a variety of conditions, with a small jerry can (say 5L) strapped onto our bike, and run it until it is actually out of fuel. Be sure to set the trip meter to 000.0 at each fill up. You can do it just once, and get a pretty good ballpark idea of how far you can go under avg conditions. Track say 1/2 a dozen tanks of gas in a variety of situations, and you'll have a pretty good idea of how far you can go on a tank of gas under pretty much any situation. (loaded/unloaded/city/hwy, etc.) I'm in the process of doing this right now. Rule of thumb; You never run out of fuel anywhere near a gas station!! LOL Good luck.

 

Fuel gauges in small planes and motorcycles are not to be trusted. On the bike you're better off just going by miles to know when it's time to fill up. On my RK, unless I'm driving pretty fast on the highway, I usually fill up at 160-170 miles.

 

I get my gas mileage from riding I know I can get 165 out of my tank.

 

I had the same problem.At one time the light was on at 109 miles andwent on a second time at 140....Now I'll ride 150 before filling the tank.

 

I have the same problem. I have a 02 RKC and my light comes on at about 120-125 miles. I fill it up and I put about 3.5 to 3.8 gallons in it! I have never pushed it as there is no reserve like my old bike. I had a 98 softail and I know that it has a smaller tank and I would get about 140 miles before I had to go to reserve. One of these days I am going to ride it untilI run out just to see how far I can go! I'll have the wife follow me in a car. I don' think I want to strap a gas can to my bike.
Phil

 

I agree, I go 165 mi and fill up.Don't even look at the guage.

 

That last 1/4 tank goes real fast. I usually fill at half a tank. One time i was down to a 1/4 and rather than use the closest station thought i would ride 10 more miles to the next station that was a BP with 93 octane, man i swear iwatched the gage flydown to empty.

 

My father was a WWII Flying Fortress pilot. I learned at a very early age about not relying on fuel gauges. I calculate my mileage at every fillup and know the exact total volume of useable fuel in my tank as well as my minimum mpg for different driving conditions. I always refuel when myestimated remainingvolume is no less than 25%. I know that's pretty **** but that'show I was raised.

 

I've found that when that light comes on.......I've got about a 25 mile window to find a station. Maybe I'm getting "TOO" good of mileage?? I'm going 230-250 miles on a tank with the Ultra