everything worked as usual. the bike was pretty much unaware that it had been sitting for several rainy and cold days.  

One thing I did noticed, now the tank takes less and less gas  

I mean, is not like my mileage per gallon dropped (of course it did, since I run at higher rpm's), but more like the tank shrink or something.

I used to hit the point of switching to reserve at 185 miles, but now is more like 165 miles, and while that's alright, I can't seem to pour more than 3.5 gallons on the tank before is completely full  :dunno:

I mean, when I go to the pump, I get really cheap price to 'fill the tank' ($7.50 or something), but the point is, why can't I put more than 3.5 gallons? I used to put more than 4 before (after running in reserve for some miles), but now I'm confused.

The bike was just serviced, so I don't know what the hell.

I have heard on this site about people talking about high speed starvation. When you switch to reserve maybe you could try switching back to on to see if it still runs.

right, that could be it. i'm gonna search the forum for this. hopefully there are causes and solutions... after all, it's a 2005 bike!  

If you just got the back from service. They may have removed the tank. If they removed the tank, they had to close the tank petcock. This one is tricky, its easy to not open completely because its a pain to get at.  This can cause fuel starvation and make it feel like you are running out of gas while you still have half a tank or so.

Might be water in the tank.

Quote from: BadgerMight be water in the tank.

wha... like actual water (H2O) inside the tank?  

I mean... there were some heavy rains and I went riding... but I don't see how the water could have got inside the tank (altough it did get in my crotch  :x ).

If there was water inside the tank... will it be 'floating' on top of the gas? and why is the bike not 'coughing' at all when warming up/running?

:dunno:

Condensation. Water will go to the lowest point (oil slicks in the ocean float). The bike may not cough when warming up because there is not enough vacuum to draw out the water out of the bottom of the floatbowls.

now the real question would be... how do I get it out? (if it's there)

should I just completely run out of fuel (at home of course) and look inside or something? or unplug the gas hoses and drain?

dang it  :x

Don't worry subc, it is easy. Just go to the store where they sell automotive stuff and get something like "Heet". We call it "dry gas" in the north, dunno what you call it in Cali    Just make sure the bottle says water remover, fuel line anti freeze, something like that. But you just add the contents of the bottle to your full tank of fuel and it will "dry out" the water, leaving the gas more pure. Then just ride it like usual, and by the next tank, you should be golden.