Fuel Consumption

[Merrymacs]

I have a 2000 Sea Ray 310 with dual Mercruisers with 550 Hours on each of them. When going down the river at cruising speed my flo scan shows the port side engine using 50% more fuel than the portside engine. The RPM's are identical at cruising speed and the temperatures are identical as well so what could be the issue. Both motors seem to run just fine. I did notice when we parked the boat on the sandbar last weekend there was a fuel like film in the water on the port side of the boat so I don't know if this is related. Anybody have this type of incident that may know where to look? Thanks.

 

[SCORPIO]

Could the transducer for the Floscan be getting clogged? I have two dead Northstar flow meters due to bad transducers and lack of replacement parts.