Idiot, Started OB dry

CTnewbie

Cadet
Joined
Jul 23, 2018
Messages
9
I have new boat and started the Yamaha 150 with the engine up. Maybe went for 30 seconds before I got it in water. There is a stream coming out when it runs. Does that mean I’m likely ok?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
47,307
I would be pulling the impeller and changing it.
 

robert graham

Admiral
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Apr 16, 2009
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6,908
I did the exact same thing to my 1999 Yamaha C90 several weeks ago.....ran motor about 30 seconds or so. I pulled the lower unit and the plastic water pump housing had some signs of melting/overheating so I replaced it ($30) and upon recommendation of dealer I also replaced the impeller($30)....so it's a $60 reminder to not do this again! Better replace these 2 items and move on....no need to take chances with your cooling system!...
 

scootchu

Cadet
Joined
Aug 16, 2010
Messages
19
While you probably did nothing to the impeller it will give you peace of mind to replace it. A dry fire is part of the launch process at marinas, granted it's about 5 seconds long not half a minute.
 

tblshur

Senior Chief Petty Officer
Joined
Aug 24, 2011
Messages
688
im no expert but i cant believe that a dry fire is acceptable procedure :facepalm:
 

robert graham

Admiral
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Apr 16, 2009
Messages
6,908
If you ever notice how tight the impeller vanes are inside that stainless steel pump cup and think of running it dry for several seconds, it's easy to see how it would get hot real fast....the water cools and lubricates the pump....
 

Grub54891

Vice Admiral
Joined
Jun 17, 2012
Messages
5,908
A dry fire is part of the launch process at marinas, granted it's about 5 seconds long not half a minute.

Not at our marina. Never run them dry.
 
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