Motor not peeing

[C2m8crooke]

I replaced the water pump, verified the thermostat was working and verified the water line was clear on my 2013 F150LA 4 stroke. It is still not peeing out water. Anyone got a clue of what I need to look at next?

[99yam40]

what water line did you verify was clear and how did you do that?
usually I blow compressed air up the pee hole while running on muffs to see if that clears up the problem

[ausnoelm]

A couple of things, do you have adequate water pressure and decent flushers? Have you tried it in the water? Did you replace the entire pump or just the impeller? Did you use genuine parts or cheap after market rubbish?

[C2m8crooke]

I used compressed air in both directions then used a spray nozzle on the water hose to verify water would flow all the way through the line. I have not tried it in the water. I used the muffs. I replaced the whole pump assembly with an aftermarket brand.

[99yam40]

]I used compressed air in both directions then used a spray nozzle on the water hose to verify water would flow all the way through the line. [/B]I have not tried it in the water. I used the muffs. I replaced the whole pump assembly with an aftermarket brand.

how could you get to both ends to do that.
so ,again what hose are you talking about.
the restriction may not be in just a rubber hose, it can be inside the motor block or fuel cooler,
that is why I mentioned doing it the way I did.

and not all after market parts are good as OEM.
did it include a new pump housing along with impellor, wear plate, and cup?
with all orings and gaskets.

did you get all of these parts back in there, especially #28 and 29

Yamaha Outboard 2013 OEM Parts Diagram for Lower Casing Drive 1 | Boats.net

[C2m8crooke]

I blew air from the "pee hole" and felt the air come out of the bottom (lower unit removed). I blew air from the bottom hose (lowe unit still removed) and felt air out of the pee hole.
I went and purchased 28 and 28 from yamaha because they did not come with the kit. They are installed correctly.
The kit that I purchased had all the parts you listed.

With the lower unit removed I started the motor and took a water hose and sprayed up the water line feom the lower unit. Water came out the pee hole.

Do I need to get a new yamaha brand water pump kit?

[99yam40]

I have no idea what is going on,
did you check to make sure the water pressure control valve is not stuck open?
some motor may not pee until the block fills up with water.
if the control valve is stuck open dumping too much water at low RPM it might be a problem.
put the lower back on and back the trailer and boat into the water to see if it will pump enough water to pee
or get a trash can to set the lower unit into with water coming up to where it normally would be to see if it makes a difference.

[TownsendsFJR1300]

Using the power head flushing hose, (port side under the cowling), with water coupled to it, is the pee hole working?

Also, was it peeing before the new pump?

Lastly was the LU drive shaft turned CLOCKWISE when pushing the WP housing back on?


.

[99yam40]

Good to see you posting again Townsend, been awhile

[ausnoelm]

Try it in the water before trying anything else. I have always found aftermarket pump kits to be pretty bad, but most do work.

[C2m8crooke]

Using the power head flushing hose, (port side under the cowling), with water coupled to it, is the pee hole working?

Also, was it peeing before the new pump?

Lastly was the LU drive shaft turned CLOCKWISE when pushing the WP housing back on?


.

Yes it pees with hose hooked straight up.

No. The motor stopped peeing at the end of last season. I just assumed it was a water pump.

Yes I did turn shaft clockwise.

[C2m8crooke]

I have no idea what is going on,
did you check to make sure the water pressure control valve is not stuck open?
some motor may not pee until the block fills up with water.
if the control valve is stuck open dumping too much water at low RPM it might be a problem.
put the lower back on and back the trailer and boat into the water to see if it will pump enough water to pee
or get a trash can to set the lower unit into with water coming up to where it normally would be to see if it makes a difference.

Where is the water pressure control valve?

[99yam40]

#6

Yamaha Outboard 2013 OEM Parts Diagram for Cylinder Crankcase 3 | Boats.net

[C2m8crooke]

Took the boat to the lake and it worked fine. Thanks for all the help

[99yam40]

Took the boat to the lake and it worked fine. Thanks for all the help

so, the water pump was not a problem. just your motor does not like the muffs you use?