Fuel Tank Size??? - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 15 (permalink) Old 05-28-2019, 01:59 PM Thread Starter
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Fuel Tank Size???

I recently got a 2012 Vulcan Voyager (and I LOVE it!) but I noticed that the tank seems to run empty on not a lot of miles...around 160. At least, that's what the fuel gauge says.

The other day I was riding and over the course of about 20 miles the gauge went from 1/3 of a tank to the needle buried in the red with all the alerts going off on my dash about me about to run out of gas any second. When I filled the tank up, it took 4 gallons of gas. The manual says the tank is 5.3 gallons in size. So what gives?
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post #2 of 15 (permalink) Old 05-28-2019, 02:40 PM
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That's just the nature of the beast. They all do that from what I hear.

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post #3 of 15 (permalink) Old 05-28-2019, 02:42 PM Thread Starter
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Originally Posted by T Gibbs View Post
That's just the nature of the beast. They all do that from what I hear.
But how many gallons are actually in a tank? If the gauge is showing it totally empty and I have an entire gallon of gas still in there, that's really bad! 20% discrepancy bad.
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post #4 of 15 (permalink) Old 05-28-2019, 02:48 PM
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I think they do that because these bikes don't have a reserve like the older ones did. I've run mine until it took just over 5 gallons, so I'd say 5.3 is what they hold. When I had my 900 the fuel guage was off, too. I bent the float rod a bit and had it where it was pretty close to right. I've not fooled with the one on my Voyager. I usually just stop and fill up when it tells me to, but I am comfortable knowing that if I need it, I have a good 50 miles of cushion in there.

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Cobra Slip Ons
Kuryakyn Grips
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Mustang Seat with Driver Backrest
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post #5 of 15 (permalink) Old 05-29-2019, 11:36 AM
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Yup. Filled up on Monday coming back from a long weekend. Trip meter was at 205. Took 5.2 Gallons. Needless to say was a bit nervous
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post #6 of 15 (permalink) Old 05-29-2019, 02:38 PM
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5.3 gal tank w/ approx 1 gal reserve when the warning light comes on (low fuel warning). there are several things that can affect the actual reserve size. the float that reads the tank fuel level is not super accurate and can even read low fuel at different levels on different bikes. that's why some people say it comes on at 1.2 gal left others w/ 0.9 gal left. cars are the same, but bigger tanks make the variations less apparent.

my bike gives the low fuel warning (on level ground) needing 4.3 gal.

also if you are going up hill, the angle will raise the float, so it will sense low fuel later because the float is nearer the rear of the tank. if you are going downhill, it will sense it sooner.

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post #7 of 15 (permalink) Old 05-29-2019, 05:55 PM
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Quote:
Originally Posted by Sabre-t View Post
5.3 gal tank w/ approx 1 gal reserve when the warning light comes on (low fuel warning). there are several things that can affect the actual reserve size. the float that reads the tank fuel level is not super accurate and can even read low fuel at different levels on different bikes. that's why some people say it comes on at 1.2 gal left others w/ 0.9 gal left. cars are the same, but bigger tanks make the variations less apparent.

my bike gives the low fuel warning (on level ground) needing 4.3 gal.

also if you are going up hill, the angle will raise the float, so it will sense low fuel later because the float is nearer the rear of the tank. if you are going downhill, it will sense it sooner.
I find that on my Voyager when I am near the end of the fuel it gives me the warning when going up a hill sooner then on the level. I have to climb a steep hill just before I turn onto my street and when my fuel gauge is reading low it will come on when I climb the hill. When I am at the top I will clear the warning and it will not be flashing any more. Then I turn onto my street and it is a steep hill up to my garage and the warning will come on again.

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post #8 of 15 (permalink) Old 05-29-2019, 10:08 PM
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Quote:
Originally Posted by JD Hog View Post
I find that on my Voyager when I am near the end of the fuel it gives me the warning when going up a hill sooner then on the level. I have to climb a steep hill just before I turn onto my street and when my fuel gauge is reading low it will come on when I climb the hill. When I am at the top I will clear the warning and it will not be flashing any more. Then I turn onto my street and it is a steep hill up to my garage and the warning will come on again.
i may have gotten it backwards. i haven't been able to ride since last august and i use mileage, not the warning light, to determine when to fill up because the light and miles to empty are so unreliable.

Installed:
RAM mount for TomTom Rider 400 (with anti theft module)
6000k LED Headlight & Spots; Kisan Headlight Modulator (works with LEDs),
__Brake Light Modulator, LED License Plate Holder
Longer Kickstand
Dobeck EJK 3.0
Lucky Mirror Extenders
Misc. RAM Mounts for Cup Holder, SPOT, Phone, etc.
Chuckster BAK, Trailer Hitch and Cooler Rack
Wiring for Trailer
Ray's Throttle Mod
Things to do:
Drilling Baffle Plates (Maybe)
Paint HF Tag Along Trailer to Match Bike

LET'S RIDE
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post #9 of 15 (permalink) Old 05-30-2019, 12:51 PM
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I'm a little put off by how off everything related to fuel is on my 2011, too.

Fuel gauge reads empty with about 1.2gal remaining.

Low fuel light made one appearance at 1/8 tank, hasn't shown up otherwise in 10 tanks.

Fuel economy gauge reads at least 3mpg higher than Fuelly calculates.

Fuelly says I'm up to averaging 32.0 now, with a best tank at 34.0mpg.

Haven't had a chance to check the odometer vs. real life yet.
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post #10 of 15 (permalink) Old 05-30-2019, 02:58 PM
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fuel and speed meters

Ya I hear ya on that 2011 Voyager here too.
rode for awhile with a GPS and noticed speedometer is off about 2-5 kph (indicates 120 but actual is 115)
and the digital fuel consumption indicator is optimistic.

300 kms at 120 kph is as far as i go between fill-ups.

some have suggested a different size rear tire (circumference) will correct the speedometer, however i'm not sure on that with ABS model.

if i stick with the speedo reading to speed limit then no smokey issues.
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