Fuel economy ? for 115HP Suzuki 4stroke

[tony_cliffy]

I actually have the Johnson but same engine. Recently I ran about 1 hour and pumped 13 gallons of gas back in it. I was probably running between 5000-6000. This sounds like a lot although it is my first 'big' engine. I was expecting more like 7 or 8 gallons. The boat is a 20' aluminum center console (Crestliner) weighing around 2300 pounds with me, engine, gas and gear. <br /><br />Engine is well maintained and just had 100 hour service. Does this sound normal? If not, what should I check?<br /><br />Thanks!

 

[walleyehed]

Re: Fuel economy ? for 115HP Suzuki 4stroke

I would doulbe-check your WOT RPM....that engine burns about 9.5 gph at 6050RPM on an 18ft Lowe Deep-V...I would venture to guess you are below 5500RPM.

 

[tony_cliffy]

Re: Fuel economy ? for 115HP Suzuki 4stroke

Wouldn't I burn less if I was below 5500? Sometimes I run 4500-5000 thinking I am going easy on the engine and fuel.

 

[JB]

Re: Fuel economy ? for 115HP Suzuki 4stroke

Hi, Tony.<br /><br />Your usage sounds a bit more than normal, but not much. <br /><br />Fine tuning your rigging and trim could make a lot of difference.