1.) Might have used sealant or Teflon tape on transducer threads. This can cause the transducer to fail. Do not use teflon tape, or thread sealant compound of any kind. [ See #503 Fuel Flow Installation Manual - Heading #2 "Initial Check Out"  -- line item #14.] 2.) Check that the transducer harness wiring is not routed with or adjacent to ignition wires, alternator wires, spark plug leads, or cabin heater ignition wires. Also check connections and crimps.

3.) Make sure there are no 90-degree fittings within 4” of the inlet/outlet side of the transducer. Cavitations in the transducer will result in inaccurate readings.

4.) Fuel Flow Tester available for $35.00 for testing instrument and transducer. Call the Sales Department at JPI at: 800-345-4574