SN200 2014 Overheating after shutdown and restart

[BertClijsters]

I have taken the transmission cooler apart again. I saw that the inlet was deformed, possibly by tightening the clamp too much. This caused a dent in the inlet. I have removed it as best I could and reconnected the hose properly. Tomorrow I will go for a test drive.
If this doesn't help, I'll replace the cooler with a new one.

[BertClijsters]

Hello All,

In the meantime, I've replaced the oil cooler and the raw water pump. I've checked all the hoses again, but the problem persists. I notice air bubbles coming from the pump outlet.
I'm now going to replace all the hoses on the suction side, especially the one with the 90-degree bend and spring.
Could it still be my dripless shaft seal, which is worn and allowing too much water to pass through?

[BertClijsters]

After a year of searching, we have found the cause of the problem. It was indeed the dripless shaft seal. For those who would like more info, please let me know.

[bturner]

On the 2012 MCs the water line for the dripless shaft seal came off a "T" between the output of the pump and the circulation pump on the engine. I always wondered what would happen if the plastic "T" cracked or wasn't sealing. I, as I'm sure others, would love to here about the fix. Too many times people show up on these sites, get what they need the ghost the thread.

[BertClijsters]

My problem was that the hose to the propeller shaft bearing drained my entire engine when I stopped it. This was caused by the siphon effect resulting from the water supply to the propeller shaft bearing. This creates an air bubble at the top of the engine, causing the thermostat to malfunction. Whenever I gave it some throttle, this air bubble disappeared, and the problem was solved. In the meantime, I had replaced all parts of my cooling system: impeller, raw water pump, circulation pump, thermostat, all hoses, oil cooler, strainer, and even completely disassembled the exhausts to flush them because there might be debris inside. All without result.

After a lot of searching, I finally got the golden tip: I made a loop in the hose to the propeller shaft bearing that sits higher than the thermostat. Now there is no more siphon effect, and the engine no longer drains.

Hopefully, I can help other people with this who have the same problem.