Bill Durham wrote:
Ronnie Garrison wrote:

Took my boat to HD Marine last week. They cleaned out the popit valve
- something like a thermostat. It is behind the electronic stuff on
the back of the motor and took a while to get to. It had grit in it.
They also replaced the water pump impeller - it was a little worn.

They said the popit valve stayed closed at low speeds to build up
pressure then opened at high speeds so I am not sure how it could
affect the high speed water pressure. Anyway, I now have water pressure.

The low water pickup on those HPDI motors may be the problem. Like
Rich said, I will be real careful from now own in shallow water.

Ronnie

http://fishing.about.com


Ronnie,

did they say by chance when the impeller should be changed. I have a 5
year old Yamaha 150 that is still pumping strong, but I'm thinking that
it should be changed this fall

BD
They didn't say, but they would probalby reccomend every year. I would
not change one unless the water pressure started to drop.

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