Fluctuating high fuel pressure

by Douglas Abney in 912 / 914 Technical Questions 5 years ago

I have a 912ULS in a RV12.

yesterday on the second flight of the day 95 degrees OAT I received a high fuel pressure alarm.

I switched to the gauge and observed it to be jumping between 5-10 but mostly staying above 7

The Rotax manual states fuel pressure should not exceed 5.8. However, the fuel pressure video on this site states max is 7.2.

Nevertheless, what could be causing the high fuel pressure readings and fluctuations?

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