When a thermostat fails- 25 evinrude

[songdog]

Model #25553B<br />Serial# 0002586<br /><br />When the thermostat opens I see a heavy discharge of what I believe to be steam ( combined with exhaust) leave the exhaust "hole". The motor starts and runs fine. IS the "momentary blast of steam" an early indication of T-stat failure? I can hold my hand on the powerhead without burning it after the T-stat opens. I can also troll all day without any problems. Is my thermostat trying to warn me?

 

[CATransplant]

Re: When a thermostat fails- 25 evinrude

If you can hold your hand on the powerhead, I wouldn't sweat it. I think the steam is caused by the water first getting to the heat of the exhaust stack when the thermostat opens. I'll bet it only lasts a few seconds and is replaced by the usual water, right?<br /><br />This just doesn't sound like a problem to me.

 

[songdog]

Re: When a thermostat fails- 25 evinrude

That was my knee-jerk thought process as well but....<br /><br /> 4 Miles offshore in Saginaw Bay, end of November-28 MPH winds, 4-7 ft seas, is no place to find that a $12.00 part has left you adrift. When a thermostat does fail will it leave the water passage open?

 

[CATransplant]

Re: When a thermostat fails- 25 evinrude

Hey, if you're at all worried about it, replace the silly thing. It's cheap, and if you're in salt water, it can't hurt.<br /><br />Parts that cost under $20 are expendable, from my point of view. If you have a question about it, at all, pop a new one in there.

 

[angus63]

Re: When a thermostat fails- 25 evinrude

If your asking are they failsafe, definitely not. Sometimes they don't seal, sometimes they don't close. Annual replacement is the best insurance.

 

[CATransplant]

Re: When a thermostat fails- 25 evinrude

One other thought: If you're going to be in that situation often, you really ought to have some kind of reliable kicker motor for safety's sake. I wouldn't go 4 miles offshore without one at any time, not even on a lake. I use a high-thrust electric trolling motor, and it has gotten me back to the ramp a couple of time.

 

[songdog]

Re: When a thermostat fails- 25 evinrude

If it is not fail safe then for the 12 bucks I should not have anything to worry about. I'm trying to find a 4 horse OMC with remote tank for just that reason!

 

[CATransplant]

Re: When a thermostat fails- 25 evinrude

Sounds like the best idea to me. If you get a small OMC outboard, your regular hose should hook right up. Look at the 6 horse ones. They're pretty darned reliable, and would push your boat a little better, I'd think. There are lots of them around.

 

[Solittle]

Re: When a thermostat fails- 25 evinrude

What size boat do you have this on?<br /><br />You wrote: "4 Miles offshore in Saginaw Bay, end of November-28 MPH winds, 4-7 ft seas, is no place to find that a $12.00 part has left you adrift." <br /><br />That is no water to be in in a small boat with a 25 Evinrude. A 4 hp OMC would be useless in that kind of water.

 

[Joey One]

Re: When a thermostat fails- 25 evinrude

To answer your question; pellet type (with the spring) thermostats fail in the closed position.