suzuki smg4 gauge and total fuel flow

dogdoc

GreatGrady Captain
Joined
Apr 23, 2019
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Age
71
Model
Marlin
Noticed that over the last several trips occasionally the gauge (starboard) set to that screen does not read total fuel flow but only the engine it is connected to. This seems to occur late in the trip and often after drifting or trolling when I power up to cruise. I never shut the engines off, just put them in idle. If I notice it and shut off both engines and restart the problem resolves and normal reading occurs. When this does happen both gauges read the proper flow from the respective engine and the sum seems to be an accurate value for the current rpm/speed. If I let it go it really screws up the fuel used and mileage calculations. NMEA connections are good and checked multiple times. Any ideas?