ualav8
Expert
I had an interesting thing happened to me today. I was trying desperately to keep up with my wife while she was riding her apex. We were blasting down the trail at about 90 miles per hour. I was at full throttle for most of the run. After a minute or two, the sled started to lose power in the engine RPM's dropped to about 4000. It was running like crap and sounding like it had dropped a couple cylinders. I left the machine go back to idle and recover and then I could slowly increase the power until finally it ran normally. One of the fuel pumps was replaced a while back and the other one is still the original. The sled has 8 thousand miles on it. My question is is it possible that one of the fuel pumps is starting to go bad and can't keep up with the demand caused by full throttle high speed running. My thought is that as the carburetors exhausted the fuel in the float bowls, the engine started to cut out on a couple cylinders. As the fuel pump refilled the balls as the throttle demand was decreased the sled operated normally again. Anybody have any thoughts on this? are these fuel pumps affected by cold weather? I know things act weird in cold temperatures. It was about -10 Fahrenheit.
Dalooch
Newbie
- Joined
- Feb 14, 2015
- Messages
- 18
- Reaction score
- 1
- Points
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- Country
- USA
- Snowmobile
- Rx1
About a month back had issues with mine only run around 7500 rpm acting like it was starving for fuel. After pulling the air box I noticed it was running on 1&2 cylinder. When I swapped the gas lines at the pump it was running on 3&4. My gas line was full of ice. It was -10 out So I put dry gas in the tank. No issues after that
