fbpx

 

Normal RPM on initial take-off with full throttle (rhythmic vibration sensed, but disappeared after reaching pattern altitude and bringing back power), following by a normal traffic pattern. On the touch-n-go, after applying full throttle, rpm rises very slowly (10 by 10 rpm), resulted in an aborted takeoff. (not being able to bring wheels up by end of the 3000-ft rwy)

Suspected fuel system problem but not sure of the exact cause. Been having a slightly higher fuel pressure on the G3X on a regular basis while on the ground. (~3.20-3.25)

Any suggestions would be appreciated😆

  • Re: Throttle Responding Problem

    by » 3 months ago


    If your fuel pressure sender is located before the fine fuel filter as Rotax recommends, then the recent higher fuel pressure readings could indicate that the fine filter is getting dirty and needs to be changed.  Not sure if this would be enough to cause the power problems you describe, but it would be a good place to start.


  • Re: Throttle Responding Problem

    by » 3 months ago


    Jeff B is correct, it could be a fuel filter starting to plug up. You should have a bypass check valve that goes around the fuel filter in case it becomes blocked, you're engine can still get fuel (unfiltered). If you run unfiltered fuel for too long, your injectors can become plugged up.

    Please provide a schematic of the fuel system in your aircraft so we can compare it with the Rotax recommended fuel system design.


You do not have permissions to reply to this topic.