Have a BF90D, Used in salt water since new (I am not the original owner). I have a black oily residue on the back of the leg below the exhaust port. In about two hours of steaming at 5000RPM I burned almost a quart of oil ( I use the Honda recommended oil). In those two hours I burned over 10 Gallons of fuel.
My inlaw has some hull with a 70 Yamaha and burns about 5 gallons for same distance also running at 5000RPM.
I have replaced both thermostats, oil change, oil filter, High and low pressure fuel filter. I figured the thermostats were the issue as the engine would think it was cold so adding too much fuel (choke) which would explain the fuel consumption.
No smell of gas in the oil but the oil feels like it is diluted, it smells like exhaust this was after a total of 3 hours running.
Any ideas?
My inlaw has some hull with a 70 Yamaha and burns about 5 gallons for same distance also running at 5000RPM.
I have replaced both thermostats, oil change, oil filter, High and low pressure fuel filter. I figured the thermostats were the issue as the engine would think it was cold so adding too much fuel (choke) which would explain the fuel consumption.
No smell of gas in the oil but the oil feels like it is diluted, it smells like exhaust this was after a total of 3 hours running.
Any ideas?