Can anyone with a Jabiru engine in their Highlander tell me what they are seeing for fuel pressure readings? I have always been concerned about the low 1.5 to 1.8 PSi that my Dynon tells me is the pressure reading when burning 5 GPH during normal cruise. At fast idle (1,200 RPM) it seems to pull between 2.5-3.0 PSI. However during full power the PSI quickly drops to 0.0 PSI at 9-10 GPH fuel burn. This has always bothered me, but the engine has kept running... until yesterday when it “paused” at full power, only to recover when I immediately throttled back to 2500 RPM. Just to be sure, I landed and tried it again. Same result. Probably some sort of an obstruction or fuel flow problem that I now need to troubleshoot, but I cannot seem to find any “normal” PSI numbers for the 3300 and was wondering if any of you Jabiru owners have noticed what your engine pulls at various power settings.
Frank Caruso
Jabiru engine fuel pressure readings
For general discussion of the Just Aircraft family of aircraft.
Includes: Highlander, Escapade, Summit and SuperSTOL.
Includes: Highlander, Escapade, Summit and SuperSTOL.
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