2005 merc 115. warning beep goes crazy over 25mph. just serviced and it is worse. Any help would be great.?

Question

2005 merc 115. warning beep goes crazy over 25mph. just serviced and it is worse. Any help would be great.?

Answer 1

You say it was just serviced,so they changed the gear oil and spark plugs and greased it.Probably changed the fuel filter to.Most of the time on these engines I have found that the problem is the sensor in the oil tank that is causing the horn to sound.If you have a service manual,there are checks for this.If this is the reason you took it for service,I would take it back and let them know the problem is still happening.Good luck.

Answer 2

Which warning beep intermittent or constant>Constant is water over heat> int in oil injection> You did remove the flush off the lower unit and didn't pick up a bag>Best take it back as there is a problem>

Answer 3

if it is a oil injection motor check the oil.   My nissan dose that when i am speeding up

Answer 4

"just serviced" could mean anything.  exactly what was done to the motor?

constant tone = overtemp, change the water pump impeller and thermostat(s)

steady beeping = fuel restriction.  check for debris in the tank, and make sure the tank vent is open and clear.  if your boat has a built-in tank with an anti-siphon valve, take it out & throw it away, only inboard engines need those.  replace the fuel line, primer bulb and fittings.