Evinrude E-NATION, for those dedicated to water, power, fishing and fun
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Skipper
Posts: 4
Registered: ‎12-20-2011

Performance

Bluewater bill,I,m back!raised the 250 etecs to position 3.at 4000 rpm running 38mph at a combined fuel flow of 25.6 gph.the speed is with in 2 mph of comparison boats,however fuel burn is still running 2gph higher then comps.max rpm is 5400 running 21" mirage plus props from old motors.occasionally after running at idle,push up to 4000 rpm the fuel flow will be 23.7 gph then slowly creep up to 25.6 and settle there.any ideas?
Admiral
Posts: 8,438
Registered: ‎07-14-2011

Re: Performance

 

 

Are you measuring the fuel consumption through a Flow-Scan or are you using the I-Command digital display that takes the real-time information from the engine computers? 

 

Try the Rebel or Cylcone props instead of the Merc ones to see if there is a difference at cruise.

 

 

 


"There is never just one thing wrong with a boat";
                    -- Travis McGee, main character in a book series by John D. McDonald 


 



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The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.

The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.