I recently bought my first motorcyle, a '97 NSR-150. So far I'm very happy with the bike except for one thing...the gas mileage is terrible!
The tank is about 10.5 Litres, which only gets me around 75KM. My driving is normally city driving so there is a fair amount of stop and go, but I keep the tach between 4-6K RPM and never race it.
Is the mileage supposed to be this poor??
I have noticed that fuel vapors are escaping from the cap on top of the gas tank - there is a noticable petrol smell when you get on. The bike has previously been in a minor accident which caused part of the gas tank to be dented in about 3/4". Could this be a cause?
I also noticed a small leak today from the nozzle where you swtich from regular to reserve tanks on the side of the bike (I ran out of gas on the way to the station), but it seemed to go away once I filled up and twisted the nozzle back into "normal" position.
However, there are stains on the frame of the bike below the nozzle that were there when I got it that look like gas/oil marks.
Anyway, sorry for the long post but if anyone could advise it would be much appreciated!!