D-120 Fuel Pressure Warnings - Rotax

[designrs]

Original VDO sender: occasional fuel pressure warnings, becoming more frequent.
New VDO sender: same as above

Mechanical check gauge: consistently showed 1 psi over VDO

New Kavlico sender (15 psi):
1) consistently shows about .5 psi over VDO
2) fuel pressure fluctuates at cruse 3.4 to 4.4, in 10 to 15 second intervals... apparently a more sensitive sender.
3) turning the electric pump on at cruise causes more rapid pressure fluctuation... but no low pressure warnings yet.
** 4) ON FINAL / Power to idle / boost pump on: low pressure warning, pressures very rapidly fluctuating between 1.7 psi and 4+ psi.

Suggestions please?

 

[dynonsupport]

Contact our Tech Support group for instructions on installing a capacitor to smooth out the readings with our older EMS units that have the Kavlico sensors - phone 425-402-0433 or email support at dynonavionics dot com.

Original VDO sender: occasional fuel pressure warnings, becoming more frequent.
New VDO sender: same as above

Mechanical check gauge: consistently showed 1 psi over VDO

New Kavlico sender (15 psi):
1) consistently shows about .5 psi over VDO
2) fuel pressure fluctuates at cruse 3.4 to 4.4, in 10 to 15 second intervals... apparently a more sensitive sender.
3) turning the electric pump on at cruise causes more rapid pressure fluctuation... but no low pressure warnings yet.
** 4) ON FINAL / Power to idle / boost pump on: low pressure warning, pressures very rapidly fluctuating between 1.7 psi and 4+ psi.

Suggestions please?