gentilebrian
Contributing Member
New Year new problems. I have 2005 BF225s about 800 hours.
Problem 1.
If my port motor is running alone all is well.
If port and starboard motors are both at idle all is well
If port is idle and starboard is any faster then idle battery alarm goes off on port motor.
If beyond idle on both motors no alarm.
I have a 4 way perko Switch for each motor going to 2 batteries. There is also a ACR between the 2 batteries. I haven't tried disconnection the ACR yet but I suspect it will stop the alarm.
I did try swapping the batteries but same issue.
Im getting 14v off each motor.
Thoughts?
Problem 2. Port motor again
at idle randomly the port motor engine alarm will go off. Some times in 5 minutes. Some times in 20. Sometimes over a hour. Also sometimes just above idle like 1000rpms.
I slow troll a lot at 2.0mph and this is when I get the alarm.
If I turn off and back on alarm is gone.
Motor runs great. Starts right up and sounds good.
Sometimes coming off plane to idle motor will die out.
Thinking maybe a O2 Sensor. I havent gone through procedure to get fault code.
Background.
Over winter I replaced high and lower pressure fuel filters.
New thermostats
fuel water seperator
spark plugs (NGK)
Mid last season replaced primer bulbs with BRP ones. Bulbs stay firm.
I have the 4 light keys witch. I think its green good, Temp, Engine, Battery.
Any ideas. I was going to buy a O2 sensor anyways because its going to fail at some point. Boat is a charter boat so downtime is a issue and so is random loud alarms. Any help is much appreciated.
Previous owner used and abused the motors. I got it at 500 hours.
Problem 1.
If my port motor is running alone all is well.
If port and starboard motors are both at idle all is well
If port is idle and starboard is any faster then idle battery alarm goes off on port motor.
If beyond idle on both motors no alarm.
I have a 4 way perko Switch for each motor going to 2 batteries. There is also a ACR between the 2 batteries. I haven't tried disconnection the ACR yet but I suspect it will stop the alarm.
I did try swapping the batteries but same issue.
Im getting 14v off each motor.
Thoughts?
Problem 2. Port motor again
at idle randomly the port motor engine alarm will go off. Some times in 5 minutes. Some times in 20. Sometimes over a hour. Also sometimes just above idle like 1000rpms.
I slow troll a lot at 2.0mph and this is when I get the alarm.
If I turn off and back on alarm is gone.
Motor runs great. Starts right up and sounds good.
Sometimes coming off plane to idle motor will die out.
Thinking maybe a O2 Sensor. I havent gone through procedure to get fault code.
Background.
Over winter I replaced high and lower pressure fuel filters.
New thermostats
fuel water seperator
spark plugs (NGK)
Mid last season replaced primer bulbs with BRP ones. Bulbs stay firm.
I have the 4 light keys witch. I think its green good, Temp, Engine, Battery.
Any ideas. I was going to buy a O2 sensor anyways because its going to fail at some point. Boat is a charter boat so downtime is a issue and so is random loud alarms. Any help is much appreciated.
Previous owner used and abused the motors. I got it at 500 hours.
Last edited: