06 Yamaha F150 peeing troubles

My motor troubles sound like an old man! The kids wanted to go water skiing today and while idling around I noticed the motor wasn’t peeing. I tried reviving it up and that didn’t seem to work. The high temp always went off so I cut it and got towed back to our dock. When I got home I hooked up the bypass and water comes out like normal from the tell tale. However, when I crank the motor it just barely trickles out. I am guessing a possible obstruction, although I didn’t hit any mud today. Any ideas or suggestions other than pulling the lower unit off, and anything g else I can check? Thanks as always

One of those tiny black dirt dobbers… more than likely.

Pull off the cowl and undo the pee hose and blow through it. They will sometimes go several inches up to make their nest. I’ve actually had one stop up the hole right at the block where the hose mounts.

Everytime you come back in after flushing, smear a little heavy grease in the end of the tube.

Thanks for the advice. I had the boat out the last 3 days and no issues. I tried using trimmer line, and didn’t seem like there was an obstruction. It pisses great hooked up to the bypass. It just won’t piss when I turn on the motor. The impeller is less than 3 months old!

quote:
Originally posted by Fred67

One of those tiny black dirt dobbers… more than likely.

Pull off the cowl and undo the pee hose and blow through it. They will sometimes go several inches up to make their nest. I’ve actually had one stop up the hole right at the block where the hose mounts.

Everytime you come back in after flushing, smear a little heavy grease in the end of the tube.


www.ChrisWestSellsCharleston.com.

Give me a call if you are looking to buy or sell a house in the Charlaston area.

Sounds silly, but Fred makes a good point. I did my impeller early spring n hadn’t cranked the motor in s while. Just a trickle of water. I pulled cowling n hose that is outside of motor head n pushed a wire through them. Sure enough, some crud!

2002 17’SeaHunt

Did you check the screen on the intake on the foot?Who installed the impeller?

Not saying that you did, but running an impeller out of the water for just a few seconds can burn one up. Like when people turn their motors over a few seconds or minutes to make sure it’s gonna crank…that kills impellers.


“I am constantly amazed at the stupidity of the general public.”
~my dad

Equipment:
2007 Grady White 222 Fisherman / 250 Yamaha
Simrad NSS evo2 and G4
1- 23 boy that won’t move out)
1 - 19 year old (fishing maniac)
1 - wife (The Warden)

ECFC

You got that right claim,I cringe every time I hear someone do that

I never run it out of the water. I have it on a floater and always dunk it before starting. I checked the grates and my friend, who is a boat mechanic, changed the impeller. I just don’t understand how I can run it on the flusher/bypass and water flows freely. But when I reconnect the flush valve/bypass to the motor and crank, nothing comes out. Could it be the thermostat? I am going to change that tomorrow. I bought the boat about 4 years ago and I have never changed them. If that doesn’t fix the problem I am going to drop the lower unit.

www.ChrisWestSellsCharleston.com.

Give me a call if you are looking to buy or sell a house in the Charlaston area.

Sounds like a good plan.

quote:
Originally posted by sman

You got that right claim,I cringe every time I hear someone do that


Dry rubber spinning fast in a metal housing is disaster waiting to happen. Many Boat owners don’t have a clue that the rubber impeller needs water as a lubricant/coolant.

I think anyone who has spent some time near a landing has heard many do this. Some get lucky some don’t.

if you have the boat on a floating dock, that’s probably the problem, pulling the boat off under power can cause the engine to suck up a bunch of air from cavitation and the height of the engine while still on the floats. Drop the lower unit off, and check the water pump housing, it probably got t enough to melt it, the plastic will cover the outlet hole for the water. Put a new impeller and housing back in. I’ve had customers do this on one day old impellers

Thanks for the heads up. I always thought it was a possibility, but have used it weekly for over a year with no issues. I may invest in the solar system that sinks the float so it’s easier to remove, so this doesn’t come up again. Hoping it’s just the thermostat!

quote:
Originally posted by spareparts

if you have the boat on a floating dock, that’s probably the problem, pulling the boat off under power can cause the engine to suck up a bunch of air from cavitation and the height of the engine while still on the floats. Drop the lower unit off, and check the water pump housing, it probably got t enough to melt it, the plastic will cover the outlet hole for the water. Put a new impeller and housing back in. I’ve had customers do this on one day old impellers


www.ChrisWestSellsCharleston.com.

Give me a call if you are looking to buy or sell a house in the Charlaston area.

if the motor pee’s correctly on the hose adapter, there is not an obstruction in the top half of the motor.
I am gonna say its either a faulty impeller/install, or you have an obstruction in the pick up.

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

Thanks Chris. Is there a way to remove an obstruction in the pick up, that can’t be seen? Will shooting water or air help? Just want to try options before removing lower unit and checking the impeller. Thanks as always for your help

quote:
Originally posted by chris V

if the motor pee’s correctly on the hose adapter, there is not an obstruction in the top half of the motor.
I am gonna say its either a faulty impeller/install, or you have an obstruction in the pick up.

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING


www.ChrisWestSellsCharleston.com.

Give me a call if you are looking to buy or sell a house in the Charlaston area.

not really, flushing it on the wash port builds water pressure through the upper system, and when you turn off the water, it back flows through the pick up, so that kind of washes everything out

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

So I took the lower unit off and the pump housing/impeller, and everything else looked fine. I did find a small sliver of rubber that was under the housing plate plate, but it was tiny. I replaced with a whole new impeller/housing etc. I removed the thermostat and put water down that opening to see if there was an obstruction. . It barely drips out the tube where the water pump connects. Is that normal? I expected there to be a lot more water coming out. If the water pump is working, I have a new thermostat, and it pees fine on the flush bypass, what else could it be? It didn’t pee when attached to the hose, but I am on a well. I am going to take it to the river and see if I have any luck. As always, any help would be appreciated!

www.ChrisWestSellsCharleston.com.

Give me a call if you are looking to buy or sell a house in the Charlaston area.

based on what you are telling us, the next step is to make sure the pressure relief valve isn’t sticking open.
there is the possibility of an obstruction or worse yet a hole in the pick up tube.

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

First off, thank you Chris V for taking the time to help! I didn’t have any luck dunking it in the river. I want to give it one more shot before I bring it in. I took the lower unit off and inspected the water pump again. the new one I installed looked fine. I checked the pressure relief valve, and it did have some debris in there. It wasn’t much and after reinstalling, it didn’t help. I really feel like it’s an obstruction. I have tried forcing water and air through the thermostat, with no luck. It comes out the tell tale, and barely out the pick up tube. I also tried forcing air through the pick up tube where it attaches to the water pump. When I do this, air comes out the tell tale. However, when try to force water through the tube it just comes back right back out. Is that normal? Is there another way to force water or air to get rid of the obstruction? Last thing, I have never noticed this, but maybe it always happens. When I flushed the motor with the bypass, it seemed to be working like normal. But when I unhooked the garden hose, a lot of water came back out of the bypass. Almost like it was blocked somewhere and came back out the bypass. I have never noticed excess water coming out of the attachment after flushing.

www.ChrisWestSellsCharleston.com.

Give me a call if you are looking to buy or sell a house in the Charlaston area.

try this
with the gearcase removed, attach a water hose to the pick up tube.
we have a short piece of an old hose with no male connector on the end, and it will slide right over the pick up tube.
turn the water on, and it should pee normally, and water should come out of the prop.
also, you can take off the thermostat cover, and water should pour out of the hole.

www.teamcharlestonmarine.com
www.bombislandboats.com
IF I RESPOND IN ALL CAPS, ITS NOT ON PURPOSE, AND I AM NOT YELLING

You didn’t miss that little bushing (sorta looks like a duck leg band) in the impeller housing? Easy to miss.


“I am constantly amazed at the stupidity of the general public.”
~my dad

Equipment:
2007 Grady White 222 Fisherman / 250 Yamaha
Simrad NSS evo2 and G4
1- 23 boy that won’t move out)
1 - 19 year old (fishing maniac)
1 - wife (The Warden)

ECFC