There I was on the side of the road
wondering what I had done wrong now! You see, I recently put a new carburetor on my motorcycle. Those of you uninterested in vehicles can just tune out now and click on something else that may interest you. The new carb required some fine tuning to get right and I've been changing main jets. After all of that work things are running smoothly and I have had enjoyable rides with no problems.
Until Monday.
I'm riding to work on the freeway around 65-70 mph when the bike starts missing. Now there is only one cylinder so when it misses all the power goes away! I find that if I keep the throttle only barely cracked it runs. So I made it to work, shut down and go about my day. That evening before leaving I unscrew the bottom of the float bowl thinking some dirt or material had gotten in there to clog the jet and cause it to not run properly. Things appear to be okay, so off I go for home. I'm 5 miles along the trip taking the back roads because of my concern for the problem to resurface when it did...in spades! I was shut down on the side of the road. It would not restart for a bit, then I got it going again. I found that at high rpm the machine would stop but at low rpm it would run fine. After verifying the fuel valve was supplying enough fuel, I guessed this to be a problem with fuel filling the float bowl. It wasn't getting in there fast enough so when I ran at a high speed for a while it drained the bowl and after sitting for a bit it refilled. So I putzed about with my new carb for a while...moving the overflow tube so it can't interfere with the float itself. I took the bowl and went after it with a Dremel to clean up all the casting bits left in there that the float could get scratched on. I then adjusted the float level. All for naught...still didn't work properly. So then I got out the original carb and put that on.
Same problem. So if fuel isn't the problem what is? Must be fire. The points are severely pitted, so I'm hoping that is the problem and I'm headed to the parts store this afternoon to try and fix it!
Until Monday.
I'm riding to work on the freeway around 65-70 mph when the bike starts missing. Now there is only one cylinder so when it misses all the power goes away! I find that if I keep the throttle only barely cracked it runs. So I made it to work, shut down and go about my day. That evening before leaving I unscrew the bottom of the float bowl thinking some dirt or material had gotten in there to clog the jet and cause it to not run properly. Things appear to be okay, so off I go for home. I'm 5 miles along the trip taking the back roads because of my concern for the problem to resurface when it did...in spades! I was shut down on the side of the road. It would not restart for a bit, then I got it going again. I found that at high rpm the machine would stop but at low rpm it would run fine. After verifying the fuel valve was supplying enough fuel, I guessed this to be a problem with fuel filling the float bowl. It wasn't getting in there fast enough so when I ran at a high speed for a while it drained the bowl and after sitting for a bit it refilled. So I putzed about with my new carb for a while...moving the overflow tube so it can't interfere with the float itself. I took the bowl and went after it with a Dremel to clean up all the casting bits left in there that the float could get scratched on. I then adjusted the float level. All for naught...still didn't work properly. So then I got out the original carb and put that on.
Same problem. So if fuel isn't the problem what is? Must be fire. The points are severely pitted, so I'm hoping that is the problem and I'm headed to the parts store this afternoon to try and fix it!
posted by Pastor Tom at 10:10 AM
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