The K-Factor of all FT-90 Gold Cube and FT-180 Black Cube Fuel Flow transducers is the same: (Note: MGL Avionics uses Liters K-factors for flow sensors)
The most common problems with the plastic fuel flow sensor not giving a reading (or given a low reading) are: Restrictor jet not installed correctly: The small restrictor jet is included with the flow sensor and needs to be installed in engines with ...
Please see the attached table for K-factors and Jet Sizes for the plastic Fuel Flow Sensor: Fuel Flow Sensor Jet Sizes l/Gal Flow Rates 3.785 l/Min Gal/hr Min Max Min Max K-Factor Jet (803) 1mm 0.05 0.5 0.8 7.9 17000 Jet (815) 2mm 0.10 1.5 1.6 23.8 ...