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overheat question.

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bayern

New member
Hi all, im generally new to the whole boating experience. I need help regarding an overheating issue. So i was cruising at around 3500rpm when i first got my overheat alert,i switched the engines off and took the engines out of the water to check for any kind of garbage that might have been stuck there, they were clean. To make a long story short it happened about 5 times after that, i then parked the boat for about 2 hours and took off again, then i got the same alert over and over. The evinrude spe******t plugged the engines to the computer and found nothing wrong. He said that i should have kept the engines in idle for about 30 seconds to have them cool down instead of turning them off. Is that something logical, has anyone heard of anything like this before? Any help would be much appreciated.
 
Rocketman14 said:
What is the year, model, and horsepower of your engines? How long has it been since you installed new water pump impellers?
Click to expand...

the engines are 2011 evinrude 250 etec. the mechanic said the impellers were pumping enough waters according to the computer. According to him the boat should be ok now but i have a feeling this will happen again!
 
I always let an engine idle for a minute or 2 before shutting it down so to me, that part makes sense. But if you are getting overheat warnings while running at 3500 rpm's in open water, something is wrong.
I would try to get a heat reading using a infrared heat unit and see if the engine is really overheating, or there is a defective circuit or component in your heat sensor circuits.
I am not familiar with that particular engine but that would be one way to narrow down the issue! One way is to remove the cowling and lay a finger or 2 on top of the cylinders. If you can touch the cylinders for a few seconds without getting burned, it is not really overheating although this is not an accurate test, it tells you that there is not excessive heat on the engine. An electronic temperature instrument is really the way to go!
 
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