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 Yamaha 9.9		  New Topic  Topic Locked
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shemp
Deckhand

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USA
19 Posts
Initially Posted - 07/11/2006 :  10:52:08  Show Profile
I am not getting very much water exiting the cooling outlet. I spoke with a Yamaha mechanic and he told me that the port may be plugged and probably not a problem. Does anyone know of a way to check / clear this?
Jeff Dowling
Chicago
203
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mfasis
Navigator

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114 Posts
Response Posted - 07/11/2006 :  11:49:20  Show Profile
What year is your motor? Is it new?

I have a 97 Evinrude 9.9 2 stroke that came with my boat. The first season I used it I had a steady stream coming out of it but not with much force. In the off season I replaced the impeller (which was in rough shape) and was very surprised with the difference when I first ran it this season.

You might want to look into that as well.

Mark
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Turk
Admiral

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USA
736 Posts
Response Posted - 07/11/2006 :  16:00:42  Show Profile  Visit Turk's Homepage
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by shemp</i>
<br />I am not getting very much water exiting the cooling outlet. I spoke with a Yamaha mechanic and he told me that the port may be plugged and probably not a problem. Does anyone know of a way to check / clear this?
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

If your port exits the housing using a rubber hose, take the hose off and run a wire through it. My 2.3 merc had the build-up right where the rubber hose was clamped to the pipe on the block. Did the trick for me.

also, take a look at your impeller in the lower unit. If you don't have a manual, google it - you will find it on the internet.
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shemp
Deckhand

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USA
19 Posts
Response Posted - 07/11/2006 :  21:58:51  Show Profile
Its a 2003 but barely used
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atgep
Master Marine Consultant

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1009 Posts
Response Posted - 07/12/2006 :  00:05:57  Show Profile
The 2 outboards I have a owned both acted the same(johnson&tohatsu). The telltale always has more force when it is cold. The tap is upstream of the thermostat in the cooling system. After the engine warms, it is acceptable to see a drop in pressure at idle as the t-stat is open. Above idle, you should have a healthy stream. If there is any doubt, get it checked or replace the water pump. You could quickly wind up with a boat anchor.


Tom.
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Capt. Kurt
Navigator

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185 Posts
Response Posted - 07/15/2006 :  12:08:18  Show Profile
I have the same outboard and also had the same problem. The water was trickling out instead of the ussual stream of water. I tried the garden hose connected to the adaptor on the motor but that didnt clear the obstruction. I then held a water hose right up to the outlet of where the water stream exits the motor. It doesnt make a perfect seal but it was enough pressure to clear out whatever was obstructing the flow and has worked fine ever since.

Hope that helps!
Kurt

C250WK 'Tortuga'
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.