Water Vapour / Steam in outboard exhaust.

[Morty]

Is it normal to have a cloud of water vapour coming out of the outboard exhaust after the engine is warmed up and running on water intake muffs at home?

 

[scott craven]

How cold is it where you are??

 

[Morty]

How cold is it where you are??

about 45F 8C

 

[scott craven]

about 45F 8C

Might just be condensation vapours.

 

[MikePA]

Is it normal to have a cloud of water vapour coming out of the outboard exhaust after the engine is warmed up and running on water intake muffs at home?

Mine was doing that around the same temperature, but not on the muffs only when in the water. Ran fine though.

 

[brutus]

Normal,i would say

 

[profisher]

Normal when cooler temps outside or when foggy on summer days.

 

[gunnerlove]

Both mine do it when the thermostats open.

 

[allanb76]

My brand new Merc 150 was spraying a fair bit of water from the exhaust port (at idle) this summer It turned out to be a slightly stuck thermostat (salt). I removed it and cleaned it up and it's been good ever since. I now flush a little longer.