Running on fumes. We’ve all said it before. Last time I ran out of gas I was luckily in my driveway, wondering why my bike wouldn’t start. I usually fill up after 160 miles, maybe 180. That day with a coughing, weezing bike in my driveway, I had 211 miles on the tank. The other day leaving work for my 20 mile commute, the fuel pump primed and made a funny noise.