Misunderstanding of GS Fuel tank

[SpookyJam]

Right.. So... As confusing as the title is, it's actually my dilemma..

I fill up at the petrol/gas station like everyone else.
Yet.. My fuel tank can hold 20/22 Litre's of fuel..

My fuel tap is in [Res] most of the time.

So.. when i fill up can anyone explain why i'm only able to fill up 7-9 Litres of fuel and my tank acts as if its full.

I'll look into my fuel tank while refuelling too, and it seems like i'm filling up HALF of the tank =/.. Very confusing indeed..

Okay bad explanation, i'll try again.
20-22 Litre fuel tank.
Can only use 7-9 Litres of fuel IF i go over that then my bike cuts out as if i'm out of fuel.

When refuelling i can only fill up around 9Litres and my tank is to the brim with fuel.
Any reason why i'm not able to fill up or use the remaining 11 litres?

Its quite difficult to explain without sounding like a total Dumb *rse.

I'll remove my tank and gently shake it to see if there's any fuel in there and it really feels like there is although, i can't reach it?

In maybe a month i'm getting a new fuel tap & filter but for now it's really REALLY REALLY upsetting my ride

Thank you for your patience when reading, i do understand how difficult i am to understand sometimes

[simon kuether]

Inside your fuel tap , is a sticky up bit with a filter on it (the only fuel filter on these big old girls) .
Maybe it's full of $hit all the way up to near the top . Pull him out and give it a gentle clean ?
I only know this because I'm an Aussie and being full of $hit myself , I recognise the symptoms .

Cheers , Simon .

[Crankthat]

Wish we all used the metric system, then I would be sure of this.
My 750l holds around 3 1/2 U.S. gallons.
Converted to the metric system = around 12 liters?

If that sounds correct then the tank holds around half of what you think.

If that is not correct then my guess would be that your tap filter is clogged up.

[SpookyJam]

Wish we all used the metric system, then I would be sure of this.
My 750l holds around 3 1/2 U.S. gallons.
Converted to the metric system = around 12 liters?

If that sounds correct then the tank holds around half of what you think.

If that is not correct then my guess would be that your tap filter is clogged up.

Sorry about that.
From a Converter http://www.litrestogallons.co.uk/

My tank should hold around 4.2 -4.4 Gallons of Fuel, yet i'm able to use only 2.0 Gallons of it.

I shall do the fuel filter idea very soon, (low on cash) although its obviously something i need to sort out before any major evolution happens to the bike.

Honestly.. Thanks for the replies

[koolaid_kid]

Actually, according to the following image, it should hold around 5.8 U.S. gallons, or around 22 Liters. However, no less than 1 gallon, or roughly 4 liters, should be the reserve.



To follow Simon's instructions, empty the tank into a gas container (or even a fuel tank of a car), turn the tank on its side, and remove the fuel tap. Once removed, you will see filter he is speaking of. It is part of the fuel tap and not removable, but you can clean it gently, such as with a toothbrush, and see if that helps.

[SpookyJam]

Actually, according to the following image, it should hold around 5.8 U.S. gallons, or around 22 Liters. However, no less than 1 gallon, or roughly 4 liters, should be the reserve.



To follow Simon's instructions, empty the tank into a gas container (or even a fuel tank of a car), turn the tank on its side, and remove the fuel tap. Once removed, you will see filter he is speaking of. It is part of the fuel tap and not removable, but you can clean it gently, such as with a toothbrush, and see if that helps.

That's Incredible (been searching for the image for a while..found it once and never again) although, quite the shame because i'm still accessing even less than what i should be able to use freely.

I will most definitely try that in the morning once i find a fugly toothbrush or something

As for the Fuel tap, i mean IF i remove it. i may not be able to put it back on as its corroded and stuck in [RES], nonetheless i have added the replies to my weekend to-do list

I really do love my bike so this is therapy/Heaven for me honestly.

Thanks for the reply, it really means a lot

[BigD_83]

Another, less likely explanation is that your fuel tap has neen messed with, and your RES is no longer so. Far more likely that the fuel draw off is plugged. Still, easy enough to pull it apart and see how the barrel is situated in the fuel cock.

[koolaid_kid]

Here is the link so you can download it:

http://www.motorcyclespecs.co.za/Gal...20850%2081.jpg

[tkent02]

As for the Fuel tap, i mean IF i remove it. i may not be able to put it back on as its corroded and stuck in [RES], nonetheless i have added the replies to my weekend to-do list

Dude, it's lasted 30 years! Replace it already!

Clean the tank, clean the carbs, do all of the other long neglected maintenance, and have a nice reliable bike that runs a long time on a tank.

[Sandy]

If the gas cap is not venting you could be getting enough vacuum in the tank to prevent fuel flow. Just release the cap when the bike quits or after you've ridden a while and listen for a sucking sound. It might be that simple, might not.

[UncleMike]

If the gas cap is not venting you could be getting enough vacuum in the tank to prevent fuel flow. Just release the cap when the bike quits or after you've ridden a while and listen for a sucking sound. It might be that simple, might not.

That's what I was thinking.

[tkent02]

Still, get a petcock. Rusted in place? Really?

[Sandy]

Still, get a petcock. Rusted in place? Really?

Yup, what he said. Much better to change out bad parts at home than on the side of the road on dark rainy night. If you don't decide on when to change the parts the motorcycle will and I guarantee that you won't like where the motorcycle decides.

[tkent02]

Yup, what he said. Much better to change out bad parts at home than on the side of the road on dark rainy night. If you don't decide on when to change the parts the motorcycle will and I guarantee that you won't like where the motorcycle decides.

Especially if it involves several gallons of very flamiable liquid and a powerful spark making device inches from your nads at 80 or so mph in the fast lane at rush hour..

[UncleMike]

Still, get a petcock. Rusted in place? Really?

100% Absolutely.