Raw water getting into engine when trailering

[quinsky]

Just bought a 2013 Cutwater 28 with Volvo Penta D4. I read somewhere about raw water backing up into engine from exhaust port when trailering. Is this a concern? If so, is there a method to drain the system when putting the boat on the trailer. Will keeping the seacock open do it? I think there would still be water in the heat exchanger. Is there a drain plug on it? Is it ok to run the engine briefly to flush system? I had a Yanmar diesel on my sailboat which had a drain plug on the exchanger. I removed it often to change the pencil zinc. There wasn't any problem starting it back up but the impeller never lost its prime.

 

[Connerkip]

I think you are referring to water backing up into the engine when "towing", not trailering. Towing would be in the water such as in using sea tow. Closing the sea cock for the tow was discussed in previous posts.

 

[quinsky]

No, I mean trailering. The article I read said the water sloshed around from braking/ acceleration and entered engine. I believe the manual also warns against steep launches due to this same risk.

 

[Kenny Marrs]

Your muffler should have a surge tube just below the exhaust hose. If you want to send me an email to my ranger account I can send you a picture of what it looks like if you still have questions. kennymarrs@rangertugs.com

Thanks,
-Kenny