Engine over heated during winterization process

J

jarwood

New Member
Nov 25, 2007
140
Signal Mtn. TN
Boat Info
2007 230 Select
Engines
350 mag
Alpha 1
Guys,

As I was going through my normal winterization process, Change the oil and filter. Hooked up water supply with muffs ran until I reached operating temperature. Hooked up portable fuel tank with mercury recomended fogging solution. Ran engine back up to operating temp. Normaly I just drain the water out of the system. This year I used one of those Camco Anti freeze kits. http://www.boatersworld.com/product/178050035.htm?bct=t13004951

The engine was running fine temp around 172 when I switched over and run the -50 freezeban everything was fine. When the Anti freeze in the Camco kit was about 5" from the bottom my engine temp got to about 180 when I saw this I was starting to shut down the engine, the alarm went off and the temp went to 188. I had shut the engine down by the time the alarm went off. Then my temp reading was 195.

Has anyone had issues like this before with this system? Did I do any damage to my engine? The only thing I can figure out is that maybe it was having a hard time pulling the antifreeze through the hose since there is no water pressure from the hose. I was watching everything close and I could not believe how fast the engine temp went up, any suggestions?
 
wisf2fish,

Thanks, I feel like that was the cause as well. Did you have any engine damage? Or was everything fine when you started it up for the first time?
 
I'm no expert but I would imagine 195 is not hot enough to damage anything. Automobile engines normally go to 200-230. And besides it was only for a few minutes or less right?
 
If it was only at 195 you definitely didn't damage anything.
I had an overheat issue last Winter(read this) and that engine runs great afterwards.
 
I would be concerned about the impellor but agree with other posts that you didn't do anything serous to the engine. Without a doubt, if an engine gets up to 240+ degrees, you are going to have issues with that engine especially if it is one with higher miles. 200 is still OK but high for a boat. I've fried a few car engines in my life and each time it was preceded with an overheating (failure of cooling system) where internal components were likely damaged (usually valve related). Good thing you shut off the engine when you did. I have a rule that I never run the engine on muffs unless I'm there on or next to the boat.
 
Your engine will be fine, but I would replace your impeller now so you dont have issues later. If it ran dry at all, replace that impeller. If its scraped up a little, it will have an effect on water flow in the system.
 
I had a guy winterize mine with this system this year. I wasn't there for the whole process and he came highly recommended from my marina. When I came back a little later, he let me know the bad news...water in the oil. I'll admit that the motor is old but this could have been the cause of the failure. It may be a head gasket or some other issue but I just wrapped and parked and will deal with it in the late Winter or early Spring.

I'd be curious to see how this thread reveals any other similar issues.

I was going to repower anyway but wasn't thinking I'd be doing it this year.
 
I even doubt the impellers bad. It sounds like he shut it down quickly
 
I've caught many a plastic bags on my drives in the last couple of years, cuts off water supply, temp jumps, alarms go off, I shut down the engines quickly. Impellers were fine.
 
my first impeller went bad after 150 hours at 2.5 seasons. I'm at the same point again with around 300 hours and 1.5 seasons. This may explain why some of us see the problem and others do not. Jarwood has an 2007 boat which could be right at the expected life of the impeller.
 
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