Grady 265 250ox66 Fuel Burn 1/2 load 1 MPG in calm water...

[chopchop]

Is this more tell-tell of the o2 sensor issue, or could this be sign of some other major issue.

 

[family affair]

Re: Grady 265 250ox66 Fuel Burn 1/2 load 1 MPG in calm water

A fouled O2 can certainly cause an OX66 to start guzzling. Before you start swapping expensive parts, check the sensor 1st and also make sure things like the low pressure fuel pumps are 100%. A ruptured diaphragm in a LP pump can dump excessive fuel into the crankcase and ultimately foul sensor.

 

[GreatWhite23]

Re: Grady 265 250ox66 Fuel Burn 1/2 load 1 MPG in calm water

Thats what my marlin gets with twin 250 ox66. What kind of fuel burn are you use to?

 

[chopchop]

Re: Grady 265 250ox66 Fuel Burn 1/2 load 1 MPG in calm water

I was expecting 1.25-1.3 best