jfoster Posted September 6, 2011 Share #1 Posted September 6, 2011 I've noticed that when I'm low on fuel (1-2 gallons), the engine picks up a vibration at different rpm ranges, similar to the carbs being out of sync. When I fuel up it goes away and runs very smooth. Could it be vent related? Thanks in advance. The following has been done: Fuel filter replaced this spring. New plugs (pulled the tank). Sea foam treatment. Link to comment Share on other sites More sharing options...
Flyinfool Posted September 6, 2011 Share #2 Posted September 6, 2011 Is it possible that the fuel pup is weak or dead and you are just running gravity feed. As the fuel level in the tank drops the fuel pressure and flow to the carbs would drop also. Link to comment Share on other sites More sharing options...
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