Running Out Of Gas–Sort Of
Thursday, August 20th, 2020
Flipping this petcock was supposed to provide me with fuel. It didn’t.
I knew I was running low on gas the morning I set out with the RMMRC on a ride over Guanella Pass. That was not a problem. We planned to gas up in Morrison and I was on the Honda, and had not yet gone to Reserve. I had plenty of gas to get that far, although I fully expected to need to switch to Reserve before I got there.
As expected, about the time we crossed Broadway on Belleview the bike sputtered a bit and I turned the petcock. But it didn’t seem to make any difference. I struggled along maybe another mile and then the bike just died.
The first thing I did was to remove the gas cap and look inside. There was definitely still gas in there, though not a whole lot. I checked the petcock position and, as expected, it was on Reserve. It wouldn’t start in that position so I moved it back to On. It still wouldn’t start. Back to Reserve and still no dice.
Roy and Charley had come back to check on me and Roy had me try a few things. No dice. Roy, however, is one of those totally prepared guys and he pulled out a bottle that he carries all the time, containing half a gallon of gas. I poured it in, tried the starter a few times, and sure enough it finally fired up and kept running.
OK, what’s the deal here? They told me to go ahead and they would ride behind me just to be sure.
On my way out to Morrison I wondered about it. Had I only partially filled the tank last time I got gas? This bike usually needs to go to Reserve at about 180 miles and it had done so this time at 185. I have run out before when I have forgotten to move the petcock back to On, and if I had not filled it all the way it could have run dry at 185. But it definitely was not already on Reserve. ???
So at Morrison I filled the tank and guess what: This tank holds 5-1/2 gallons. Roy had given me half a gallon and then we had ridden about 10-15 miles. The tank reached full after only 4.07 gallons. That math does not add up.
I filled the tank there at Morrison and then we rode a bit more than 100 additional miles that day and all went just fine. But now I need to figure out what the situation is. It appears to be a blockage of some kind in the fuel line but how to confirm this?
I figure the first thing to do is simply to switch to Reserve with plenty of gas in the tank and see if it runs. That way I know I won’t be stranded out somewhere because I can just flip back to On. But what if that doesn’t do it?
I have wondered for a long time about how the Reserve setting functions physically. The tank straddles the frame so does one side (Reserve) stay full as the other side empties? With intakes on both sides? Or, I have wondered, is it all one feed with an intake at one elevation, with flipping the petcock simply lowering the intake?
OK, so I got answers. There are two intakes, side by side, at different levels. So even if I switch to Reserve, if there is enough gas in the tank it is going to be fed via the primary intake.
While I tend to have a mechanical aptitude, I’m not this much of a motorcycle mechanic, so this means it is time to call Joel, my mechanic.
Biker Quote for Today
Top 10 signs that a computer is owned by a Harley rider: 05. — The mouse is referred to as “the rat.”
