Pee Hole Working Fine But The Two Square Shaped...

[SouthGa]

holes at the base of the top part of the engine that used to spit some water out now has a light smoke coming out and no water. Also smoke is coming out of the prop area. I can't tell if the engine is running hot but I shut it off because I've never noticed the engine do this before I did not want to take a chance. The engine is a Mercury 90 HP and about 15 years old. By the way I noticed this when I was flushing out the engine after running it all day. Can someone tell me if I have a problem??? Thanks!!

 

[Terry H]

Re: Pee Hole Working Fine But The Two Square Shaped...

yes...you have a problem

 

[Bobby Powell]

Re: Pee Hole Working Fine But The Two Square Shaped...

Hello SouthGa:<br />Sounds like to me you have a bad thermostat. But before going there, when was the last time you changed the water pump impeller? If more than 2 years then do that first...best wait for the more experienced guys to answer ya. <br />I thought I would give you a better reply than "yes...you have a problem " <br /><br />Good luck-<br />Bobby

 

[steve forsythe]

Re: Pee Hole Working Fine But The Two Square Shaped...

If youve tried to 'kick' it a little in nuetral to draw up a pee steam and still get nothing, i would vote on the impellar also. When you were on the water at high rpms you created enough suction for 'pee'. I would not run it without diagnosing and fixing.

 

[DJ]

Re: Pee Hole Working Fine But The Two Square Shaped...

You've got a restriction or a weak water pump (impeller). The two exhaust relief ports will only spew water at elevated rpm's (2000 and up) yet you should not have steam.<br /><br />Change the pump.

 

[ODDD1]

Re: Pee Hole Working Fine But The Two Square Shaped...

It is basic maintenance time...change the impeller....by the way, if this is a 6cyl motor it has no thermostat.

 

[12Footer]

Re: Pee Hole Working Fine But The Two Square Shaped...

I have a prediction to make. You will find the impeller intact,but it will be "trained" into the shape of the housing. <br />ODDD1 and Bobby are right,it's just time to do it.The reason I make that prediction, is the symptom you described,of having some flow at higher RPMs, ziltch or very little at idle. And pat yourself on the back for a good job of catching it before it did any damage to your engine.