Yamaha low quality components

[99yam40]

you said it was a 2016 motor with 150 hours on it,
your owner's manual should give you info on how often to inspect and change parts by hours or by time .
so yes you should have seen the rust on the drive shaft going on before you had a leak to chase down.

but I will admit not many would look at the bottom of the oil pump because there is no way to look at that easily.
I am not sure how salt water would get up that high to get on those parts to cause them to rust

[boscoe99]

you said it was a 2016 motor with 150 hours on it,
your owner's manual should give you info on how often to inspect and change parts by hours or by time .
so yes you should have seen the rust on the drive shaft going on before you had a leak to chase down.

but I will admit not many would look at the bottom of the oil pump because there is no way to look at that easily.
I am not sure how salt water would get up that high to get on those parts to cause them to rust

Steep ramp. Ass heavy boat.

The water level can be well up to the top of the bottom cowling by the time the boat is deep enough into the water to float it off. I have seen some boats deep enough in the back end such that salt water is coming over the top of the transom.

[99yam40]

maybe that would be a good reason for a jack plate, lift it all the way up before backing down the ramp or power loading onto the trailer.
never thought that much about how far a motor drops in the water when trailering or launching

[TONYG279]

you said it was a 2016 motor with 150 hours on it,
your owner's manual should give you info on how often to inspect and change parts by hours or by time .
so yes you should have seen the rust on the drive shaft going on before you had a leak to chase down.

but I will admit not many would look at the bottom of the oil pump because there is no way to look at that easily.
I am not sure how salt water would get up that high to get on those parts to cause them to rust

The leak is completely unrelated to the corroding of the shaft, i have seen neglected 22 years old shafts look way better than the one in this engine. All points to yamaha using crappy components on their engine nowdays. This is where we suspect the leak is coming from, this plug was totally corroded too, its next to the oil pump, engine was flushed after every use.

[99yam40]

exactly how does flushing the motor's cooling passages get to those areas to wash them off?
maybe you need to find out how you are getting salt water up to those areas and how to stop that from happening.

[TONYG279]

exactly how does flushing the motor's cooling passages get to those areas to wash them off?
maybe you need to find out how you are getting salt water up to those areas and how to stop that from happening.

So you are saying salt water is not supposed to be in those areas?

[99yam40]

So you are saying salt water is not supposed to be in those areas?

boscoe posted how it might happen, but under normal operating conditions salt water should not getting up that high in there

[TONYG279]

thought marine engines were supposed to get salt almost everywhere just by operating in salt water, if that is the case it is very much possible to have corrosion issues near the oil pump. Correct me if i am wrong on this.
thanks for all the help.

[ausnoelm]

What do you suggest the drive shaft be made out of to make it better?

[TONYG279]

What do you suggest the drive shaft be made out of to make it better?

Not a metal expert but i am pretty sure it can last more than 4 years, it has been done before.

[ausnoelm]

Your drive shaft is still fine, it's just got surface rust, did you replace it?

[Keithbaja]

It doesn't need to get "pooped" 2 get corrosion. Just being in the salt water environment will show poor metals. And lack of fresh (Grounded) zincs or stray current in a slip.

[TONYG279]

Your drive shaft is still fine, it's just got surface rust, did you replace it?

Not for now, just spent over $500.00 in a new oil pump, thermostat, gaskets and corroded screws inside and out of the engine. Thanks God my friend is not charging me for labor

[boscoe99]

I think someone has confused the boats.net Yamaha motor help forum with the Dr. Phil self help forum.

www.helpmedrphil.com

[TONYG279]

I think someone has confused the boats.net Yamaha motor help forum with the Dr. Phil self help forum.

www.helpmedrphil.com

Oh boy , here we go.