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-   -   Poor water circulation?? (https://www.offshoreonly.com/forums/general-q/156864-poor-water-circulation.html)

RJBBC 04-27-2007 06:13 AM


Originally Posted by jayhawk261 (Post 2107740)
What type of aftermarket exhaust? We used a Stainless Marine manifold system one time and after losing an engine due to detonation/overheating at a specific cylinder, Stainless Marine told us that sometimes their fittings are too long and bottom out against the internal surface of the manifold. Sure enough, that was the culprit. The engine we lost detonated in the cylinder closest to the blockage, a valve broke and went through the rest of the engine. With the new engine, we cut down the fitting, and no more water flow problem.

The exhaust is a Stainless Marine manifold.

RJBBC 04-27-2007 06:14 AM


Originally Posted by monstaaa (Post 2107630)
check for the little balls on the spring shaft in the water outlet housing. sometimes they rot out or get stuck, and diminish flow

Thanks, I will try that if it happens again.

jayhawk261 04-27-2007 10:15 AM


Originally Posted by RJBBC (Post 2107808)
The exhaust is a Stainless Marine manifold.

I would check that the fittings are not too long in that event. The fitting we had a problem with was the starboard front. Check them all and see if they are good. If there is one bottoming out, it is an easy fix. Cut the fitting down until the blockage is gone. Good luck!

Vinny P 04-27-2007 02:39 PM

I didnt think that engine has those check balls.

Quaid24 04-28-2007 09:14 PM

Any water in the oil?

RJBBC 04-29-2007 07:20 AM


Originally Posted by Quaid24 (Post 2109641)
Any water in the oil?

Went boating yesterday. Started the boat up and sounded fine. After a short cruise and stop I started the engine and it sounded funny again. I turned the Captain's Call ON/OFF a few times and then it sounded fine. The oil looks good. I am almost positve the port side Corsa Captain's Call internal diverter is sticking in the closed position.

Old Navy 04-29-2007 09:22 AM

Had a very similar problem. I had a bad relay on the Corsa wiring. 1 side open, 1 side closed. On my set up corsa had two relays 1 for each diverter solenoid. Now there is only 1, and a lot less wire. Works good now.

Pismo10 04-29-2007 10:51 AM


Originally Posted by RJBBC (Post 2109811)
Went boating yesterday. Started the boat up and sounded fine. After a short cruise and stop I started the engine and it sounded funny again. I turned the Captain's Call ON/OFF a few times and then it sounded fine. The oil looks good. I am almost positve the port side Corsa Captain's Call internal diverter is sticking in the closed position.

Yes. If water flow was a problem the manifold would get noticably hot.


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