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Howdy.
Took the boat out today - 90 HP 2 stroke Yamaha 2000 model. No water shooting out the cooler tube, when engine running at dock - loaded boat up and put hose and "ears" on, run engine - no water coming out little discharge tube. This particular hose was not all that high pressure, but provided lots of
volume - which was way more than sufficient than necessary for the motor to "flush and cool" properly.
Later, pushed coat hanger in and out of outlet - didn't notice anything, put water hose and turn on water and motor - decent flow, but not great. This was at my house with high pressure and flow volume of water. When I turn the motor off, water continues to stream out for about 10 seconds, and slowly trails off to a stop. When i wait about a minute or so and turn water on without engine running, no water coming out outlet - which I believe is normal.
Any ideas? I am guessing that the impeller / cooler pump area - is letting pressurized water from hose bypass the impeller enough to shoot out - for a little while after engine stops. Does this indicate a worn out impeller / worn out water pump / seal? Could there be something clogged up? With water flowing out for a while after motor is shut off - what does that indicate?
This worked perfect about 3 weeks ago, then friend used boat last weekend. I asked if it was "peeing" good when he had it out, he said he never looked. Said he ran into some mud though. No indication of clog in little water inlet things on bottom of motor.
Thanks, Steve
Took the boat out today - 90 HP 2 stroke Yamaha 2000 model. No water shooting out the cooler tube, when engine running at dock - loaded boat up and put hose and "ears" on, run engine - no water coming out little discharge tube. This particular hose was not all that high pressure, but provided lots of
volume - which was way more than sufficient than necessary for the motor to "flush and cool" properly.
Later, pushed coat hanger in and out of outlet - didn't notice anything, put water hose and turn on water and motor - decent flow, but not great. This was at my house with high pressure and flow volume of water. When I turn the motor off, water continues to stream out for about 10 seconds, and slowly trails off to a stop. When i wait about a minute or so and turn water on without engine running, no water coming out outlet - which I believe is normal.
Any ideas? I am guessing that the impeller / cooler pump area - is letting pressurized water from hose bypass the impeller enough to shoot out - for a little while after engine stops. Does this indicate a worn out impeller / worn out water pump / seal? Could there be something clogged up? With water flowing out for a while after motor is shut off - what does that indicate?
This worked perfect about 3 weeks ago, then friend used boat last weekend. I asked if it was "peeing" good when he had it out, he said he never looked. Said he ran into some mud though. No indication of clog in little water inlet things on bottom of motor.
Thanks, Steve
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