Fuel reading full on my new to me 08 GS

Coppertop

Well-known member
UKGSer Subscriber
Joined
Jan 1, 2017
Messages
532
Reaction score
259
Location
Falkirk, Scotland
Hi all, recently picked up a lovely 08 GS. I've had fuel gauge issues before on a 2010 RT where it read totally empty all the time. The strange thing is on my new GS is that the tank reads full when I fill up but then doesn't do anything until there's about 4 litres left, then it will go down 2 bars, and no more. Fuel range says 180+ miles the whole time. Once I fill up it goes back to full. Is my fuel strip toast? Looking at the new version of the part on Motorworks but it isn't cheap so would like to avoid it ideally!
 
Hi all, recently picked up a lovely 08 GS. I've had fuel gauge issues before on a 2010 RT where it read totally empty all the time. The strange thing is on my new GS is that the tank reads full when I fill up but then doesn't do anything until there's about 4 litres left, then it will go down 2 bars, and no more. Fuel range says 180+ miles the whole time. Once I fill up it goes back to full. Is my fuel strip toast? Looking at the new version of the part on Motorworks but it isn't cheap so would like to avoid it ideally!
Sounds like the GS “ character “ trait . They all do that I believe .
 
My 650 (800) was a little better, with countdown starting from c. 90 miles.
And just checked in my old Haines library, its a float not a strip.
 
Mine is a january 2010 bike. It doesn't have the breather on the final drive. When searching for parts or when using RSD using my vin it tells me I do have a float.
 
The fuel gauge on my 2007 GS was innacurate but consistently so from new, but the low fuel warning light was always OK. Then it had the recall for a new fuel pump at 67k miles on the clock and now the gauge is toast. Fortunately the warning light is still ok, which is all that bothers me tbf.
Reckon on 160ish miles to fuel light with 30 miles to empty when ridden hard, up to 210 miles to empty when in Miss Daisy mode.
I always reset the trip meter when refuelling, old habits die hard.
 
The fuel gauge on my 2007 GS was innacurate but consistently so from new, but the low fuel warning light was always OK. Then it had the recall for a new fuel pump at 67k miles on the clock and now the gauge is toast. Fortunately the warning light is still ok, which is all that bothers me tbf.
Reckon on 160ish miles to fuel light with 30 miles to empty when ridden hard, up to 210 miles to empty when in Miss Daisy mode.
I always reset the trip meter when refuelling, old habits die hard.
something seems awry with your paragraph - on one that age, it should be a strip - the light and the gauge are all driven off the same set up
 
re the wild readings listed above....

my 2007 one with a strip, gave reliable and accurate info from full to empty - giving decent linear fall with use all the way from full to empty
- from new it allowed the bike to be ridden till 11 miles shows - after the fuel pump recall it would run out at 15 miles. Then the strip died at 13 years

it came alive with piezo lighter trick and still operates off the bike for play time

I was unaware of the ZFE fun when I clipped on the cheaper float sensor (you need the twin socket ZFE high you get with ESA or Cruise on an RT, to have the brains to understand either strip or float signals - allowing you to use either sensor type). At the time the strips were worse than the originals - so went with the NL bods silly addon to convert float to strip logic. Its a disaster with random info top to bottom, struggles with a full load on the side stand and gives up till back upright etc.

BM finally made an updated strip circa 2022 - but the one in my link above does the same thing - allegedly without BM's special reliability / theft opportunities built in

it now shows a method to nobble the low level light nag on third party tools - no idea if it functions, nor why anyone would ever do it - the idea across cars and bikes - around ave use mpg - the light is a reminder to let you know, since it illuminated you have around 50 miles to find a fuel station before life gets uglier

if you can use a float and have the small tank - don't clip on the fuel pump - get the bracket to clip next to the fuel filler - for a far more linear rate of fall on the gauge
 
Last edited:
Had mine replaced lasted two years and a bit,out of watt entry of course, just rely on the trip no more risk of running out.
 
something seems awry with your paragraph - on one that age, it should be a strip - the light and the gauge are all driven off the same set up
Nothing awry, it is a strip, I'll explain further. From new it would show full for around 90 miles, then drop to 2 bars over the next 15 miles where it would remain until the fuel light came on, anywhere from 160 to 180 mile depending on how hard it had been ridden. I got used to recognising it hitting 2 bars as being almost half a tank left.
After the new fuel pump, it now reads half a tank after filling up, full after 20 or so miles, then seems to randomly drop to 2 bars where it remains until the fuel light comes on at the same mileages as before. I have no idea why this change in readings occurred and as long as the low fuel light works OK then I'm not bothered.
 
Nothing awry, it is a strip, I'll explain further. From new it would show full for around 90 miles, then drop to 2 bars over the next 15 miles where it would remain until the fuel light came on,
that's pretty much what the float does when fitted on the pump of small tank bikes when using the NL box of tricks...

if it is a strip - whilst its out and dry, calibrate it with diagnostic gear - and ensure correct fitment in the tank - should then be 100% normal
 
When I bought my (early built) R1200GSA-10 I had problems with the fuel gauge.
I was even fooled by it so much that I ran out of gas and thought I had a faulty fuel pump(!!).
The previous owner (a friend who bought the bike new) has had problems with the fuel strip since the bike was almost new. So I chose to convert to a float and it is one of the better modifications I have made to this bike. Now the fuel gauge works and I don't have to replace the fuel strip in the future.
 
The piezo lighter trick worked for me. All that said, I am still not inclined to run until one bar. Stop and fuel up early and save any grief!
 


Back
Top Bottom