Author Topic: Low fuel mileage  (Read 902 times)

0 Members and 1 Guest are viewing this topic.

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Low fuel mileage
« on: February 21, 2018, 11:51:11 pm »
So i wanted to see something. My fuel gauge has been off for a few weeks! I’ve heard everything from “ you’re riding conditions directly affect fuel consumption ” to “ thats just how the bike is”. Well, i decided to try to run out of fuel. Should give a clear clue as to my mileage. So I rode all day sunday until my low fuel light came on and kept riding ( actually i had to get home, i was at 135 miles on my odometer). Well @ 75-80mpg on the highway ( sometimes faster) , i got an additional 70 miles and still didnt run empty. I didnt stop to fill up because i had somewhere to be. My low fuel light came on @ 135 miles. So what do you suppose is going on? Could my fuel sender be bad?? I have a 2013 with 20k on it!
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline P07r0457

  • Bicycle
  • *
  • Posts: 108
  • AREA: Southeast Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Low fuel mileage
« Reply #1 on: February 22, 2018, 12:45:23 am »
Any idea what mpg you average?  I tend to average 35-38mpg so I’d expect to be about run out at 205 miles.
2009 Kawasaki Concours 14 ABS - Candy Diamond Red
1986 Honda CB700SC Nighthawk S - Candy Aleutian Blue and Shasta White

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #2 on: February 22, 2018, 01:30:38 am »
I roughly get around 35-40 depending. But the weird thing is my low fuel light came on @ 135 miles. It was a day of moderately easy riding! And i got 70 more miles on that low fuel light! I still have gas in the tank!
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline rrsperry

  • Senior Moment Member
  • Bicycle
  • *
  • Posts: 124
  • No matter where you go, there you are...
  • AREA: Northeast Area
  • COG#: 12503
  • Membership Level: Active
Re: Low fuel mileage
« Reply #3 on: February 22, 2018, 01:49:47 am »
Well, when you fill up, you know what you got. Use that as your guide.

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #4 on: February 22, 2018, 02:42:01 am »
I think something got lost in translation. I dont want to know what my mileage is, thats not what im asking. What i want to know is what isnt working properly that i can get 75 miles after the low fuel light comes on? The low fuel light is on for the last gallon-ish. Thats roughly 35-40 miles not 75. So is my fuel sender bad or is my ecu calculating it wrong?
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline Old Man on a Connie

  • South West Area Director
  • Officer
  • Iron Butt
  • ****
  • Posts: 4868
  • AREA: Southwest Area
  • COG#: 9932
  • Membership Level: Area Director
Re: Low fuel mileage
« Reply #5 on: February 22, 2018, 03:11:21 am »
I think, and if I remember correctly, and I think therefore I am  ;) The on board computer uses your last 500 miles to calc usage. IE if your last 500 miles was city with constant on off throttle thats what it uses to calc. If your last 500 was slab running it uses that. If your last 500 was in a head wind uphill with temps in the 30's............ But I could be wrong. Have before and will again. Try resetting. I've had my Low Fuel come on anywhere between 125 and 200 depending on conditions. I bet that answered your question yeah  ;) My ODO is my back up. I count on at least 30 mpg so at 100 i"m looking, At 125 I'm stopping, at 150 I'm sweating the next stop.
"I don't always ride street bikes, but when I do, It's a Concours. A C14 '11 silver to be precise." OTP 2017 Traveler. It was a Blast Baby.

Offline rrsperry

  • Senior Moment Member
  • Bicycle
  • *
  • Posts: 124
  • No matter where you go, there you are...
  • AREA: Northeast Area
  • COG#: 12503
  • Membership Level: Active
Re: Low fuel mileage
« Reply #6 on: February 22, 2018, 10:36:53 am »
Hell, on my Aprilia, and the Connie, the low level light comes on with about 2 gallons. Iirc both are 5.5 gal, and it’s always 3.4- 3.5 to fill up.

It really doesn’t matter to me. I know I start looking, or plan on getting gas at 160 miles or so. I have to stop and pee by then anyway. Lol

Offline Gscott

  • Bicycle
  • *
  • Posts: 133
  • 09 C14
  • AREA: Southwest Area
  • COG#: 12413
  • Membership Level: Active
Re: Low fuel mileage
« Reply #7 on: February 22, 2018, 12:28:29 pm »
I thought low fuel was meant to come on with roughly one gallon left in tank. Have pushed mine about 40 miles after low fuel has come on  and not run out, most fuel added has been 5.5 gallons.

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #8 on: February 22, 2018, 10:31:29 pm »
So what your saying is that my light could possibly come on anywhere from 1-2 gallons and my mileage could be based on my last ride??? I guess im just going to have to fill it up now and see what my overall mileage is! This is gonna make my Iron Butt rides just that much more interesting!!
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline JDSCO

  • Scooter
  • ***
  • Posts: 279
  • 2016 C14
  • AREA: Southwest Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Low fuel mileage
« Reply #9 on: February 22, 2018, 11:24:51 pm »
New 2016 C14 Apr 2017

To date I've purchased
148 gallons fuel 8400miles
47.3mpg average with low of 40.5mpg and high of 62.41mpg
244.5 odo miles, highest, single fill run, without "low fuel warning"

I live at 9000' and that explains my mpg's but I also ride 90% open road, 10% traffic
my ecu computer mpg vs my actual calculated mileage are within 5mpg but never match

My ecu computer is a "trend instrument" as far as I'm concerned, it is not an accurate fuel-flow meter and I don't think it was meant to be

I've had two C14's and they both, the ecu computers, behaved similarly, they're not accurate.
They just report a trend
"Remember? You're never too old to fall down."
Jay Leno

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #10 on: February 22, 2018, 11:37:24 pm »
Gotcha! So what you’re saying is i ‘may’ ride to fast?? Or use too much throttle   >:D
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline JDSCO

  • Scooter
  • ***
  • Posts: 279
  • 2016 C14
  • AREA: Southwest Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Low fuel mileage
« Reply #11 on: February 22, 2018, 11:46:53 pm »
^ and you're at sea level
I'd like to ride a C14 at sea level!

"Remember? You're never too old to fall down."
Jay Leno

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #12 on: February 22, 2018, 11:59:20 pm »
Come on down! Im sure we could burn through a tank or two, quickly ( cause i apparently have no self control)!!!! :))
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline gpd323

  • Crotch Rocket
  • ****
  • Posts: 1035
  • AREA: Northwest Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Low fuel mileage
« Reply #13 on: February 23, 2018, 12:53:51 am »
I reset my MPG display every fill up. Now with the super dee duper Steve the magic guy fuel maps I have had 52.7 going to Idaho, I consistently get 48+ all the time. I get 50 mpg easily depending on my riding style.

His new Mt Runner I expect to be as good or better mileage wise.

My annual trip to through OR/CA and back is in May is going to be FUN FUN FUN!!!! The new MR map is perfectly tuned to my riding style.  :beerchug:
Greg Downing
Beautiful Downtown Spanaway
Washington State

Ride while you can.

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #14 on: February 23, 2018, 01:21:18 am »
Im still saving my pennies for the mountain runner flash!! I reset my average everytime i fill up!
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline TimR

  • Global Moderator
  • Iron Butt
  • **
  • Posts: 3460
  • AREA: Northwest Area
  • COG#: 9032
  • Membership Level: Asst. Area Director
Re: Low fuel mileage
« Reply #15 on: February 23, 2018, 05:16:11 am »
With a fuel tank full my 09 shows it's a full tank for the first 100 miles. Then gas gauge moves quit briskly for the 2nd 100 miles. I fill up at 220 miles typically and ready to climb off the bike for a bit anyways. My best mileage is on a hot day at 3500 rpm in OD and end up a 10th of a mile less than JDSCO on average.
Blue 1975 Z1B 900, Red 09 C14     I might not be perfect but at least I don't ride a Suzuki

Offline turbojoe78_MA

  • Street Cruiser
  • ****
  • Posts: 879
  • AREA: Northeast Area
  • COG#: 8645
  • Membership Level: Active
Re: Low fuel mileage
« Reply #16 on: February 23, 2018, 12:12:23 pm »
My low fuel indicator seems very consistant, in warm weather it comes on around 215 to 225 miles.

If I fill the tank within a couple miles of it coming on it takes 4.6 to 4.8 gallons to fill it back up.
1968 Honda 160 Scrambler,  Sold / 1979 Kawasaki SR 650, Traded in for next one,  1978 Kawasaki KZ 1000 Z1R Turbo Sold / 1986 Kawasaki ZX 1000R Ninja / 1999 Kawasaki Concours / 2014 Kawasaki Concours 1400  COG memb# 8645


Offline Rev Ryder

  • Officer
  • I Need a Life
  • ****
  • Posts: 8769
  • We came. We saw. We Concours-ed.
    • Presbychuck
  • AREA: South Central Area
  • COG#: 7235
  • Membership Level: Executive Director
Re: Low fuel mileage
« Reply #17 on: February 23, 2018, 02:46:29 pm »
I thought the fuel pump assembly had a "low fuel" sensor attached to it at a fixed height.  However, I would think that sensor would do nothing more than trigger the switch from "XXX miles remaining" to "WARNING WARNING WILL ROBINSON YOU NEED FUEL."  As for trends within the ECU, I don't know.  Since you can get both INSTANT mileage and AVERAGE mileage, I would think the calculated miles remaining would be a function of the two.  How each would be weighted in the calculation I do not know, but have noticed that after, say... 10 miles of hotfooting it, the "miles remaining" changes by far more than the 10 miles traveled.  That makes me think the calculation is less a function of "trend" than "estimated actual" mileage and measured fuel.  This makes me think Tjnoma99's  issue is, as he thought, something to do with his fuel level sender.  Adjustment? Malfunction?
« Last Edit: February 23, 2018, 02:50:45 pm by Rev Ryder »
Fortis non Ferox
 Shafties Can't Wheelie

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #18 on: February 23, 2018, 04:24:12 pm »
I thought the fuel pump assembly had a "low fuel" sensor attached to it at a fixed height.  However, I would think that sensor would do nothing more than trigger the switch from "XXX miles remaining" to "WARNING WARNING WILL ROBINSON YOU NEED FUEL."  As for trends within the ECU, I don't know.  Since you can get both INSTANT mileage and AVERAGE mileage, I would think the calculated miles remaining would be a function of the two.  How each would be weighted in the calculation I do not know, but have noticed that after, say... 10 miles of hotfooting it, the "miles remaining" changes by far more than the 10 miles traveled.  That makes me think the calculation is less a function of "trend" than "estimated actual" mileage and measured fuel.  This makes me think Tjnoma99's  issue is, as he thought, something to do with his fuel level sender.  Adjustment? Malfunction?

Thank you! Finally someone who sees what im seeing! I was starting to belive i was crazy! Im still at a loss as to how my low fuel light indicator is on, yet i still managed to get over 75 miles?
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours

Offline barberman

  • Tricycle
  • Posts: 38
  • AREA: Northwest Area
  • COG#: Forum
  • Membership Level: Forum Subscriber
Re: Low fuel mileage
« Reply #19 on: February 23, 2018, 10:13:17 pm »
Hi, Don't overthink gauges. Sounds like you need the little jumper wire Brian makes. That will get rid of the flashing light.  Anyway, One time i left for town with 14 miles left on current range and after a few miles it was showing 40 miles left. Simply because of light throttle-steady. Upon accelerating,  it'll drop into the 30's and leveling off at 90 mph it will read 46 mpg! Most miles on 1 tank on the c14 was 273 (one day).  A lot of variables ..KJ

Offline Tjnoma99

  • Scooter
  • ***
  • Posts: 267
  • AREA: Southwest Area
  • COG#: 12686
  • Membership Level: Active
Re: Low fuel mileage
« Reply #20 on: February 23, 2018, 10:43:12 pm »
I did get the elim and i love it. But my issue is i was doing 75-90 mph on the freeway coming home. Its kinda windy ( at 90 everything is windy ;) ). I still got 75+ miles. I just caught a cold or id go fill up and try to figure it out. The reason im concerned, i have an iron butt ride coming up soon and I would like to be able to at the very least think it close!
The secret to life: 👆👆👇👇👈👉b a b a start!

2013 Kawasaki Concours 14, 2005 Yamaha Roadstar Warrior xv1700, 2003 Kawasaki Concours