Odd engine config. on SAN 210

[goodmatt78]

I'm winterizing a boat tonight that has PCM 5.7L. i thought these were either raw water cooled or partial closed systems. Anyways the manifolds had coolant in them and both drains were clearly labeled "fresh water". The PCM manual doesn't list this configuration as it shows 2 manifold plugs that need removed. Any idea what engine config is full closed cooling?

All i found to drain was the trans cooler, engine cooler, heat exchanger and v drive.

Also, i had to refill with coolant.... Do the manifolds or closed system need bled?

[Nautiquehunter]

Has the boat been run this season? It might be left over from the last winterize if it has not been run since.

[goodmatt78]

Yes it ran this season.... A lot.

[bturner]

What year is the boat and do you have any pictures?

[goodmatt78]

HAHA....2016 SAN 210. I think I figured it out. It must be the CWS (Coastal Edition). Too bad I couldn't find this last night....

https://www.planetnautique.com/vb5/f...ith-exe3432015

It doesn't show up in the 2016 PCM manual, but found it in the 2015 page 16 in the link above. Looks like I did it right. Ridiculously easy....except when you spend 2 hrs searching the web. :-)

Unfortunately, I did lose some coolant and topped it off, but did get an exhaust over temp code. I shut it down let it cool and then was able to add more coolant to the reservoir. I assume it had an air bubble that cleared.

[bturner]

Makes sense. That's pretty much what I was thinking which is why I was looking for a picture. Glad you got everything straightened out.....

[LakesideRec]

In my SAN 210 Coastal I found much easier to get the closed loop coolant system filled and running good by raising the reservoir a couple of inches. I wedged a small piece of 2x4 under it. I also shortened the overflow hose from the heat exchanged top drain/vent valve so I can vent the air easier and see when the heat exchanger is filled without any air. Also very important to vent the air out of the tops of the exhaust/CAT manifolds using the small allen screw plugs since they can be a high spot that collects an air pocket as well.

The factory design seems prone to loss of cooling effectiveness due to air pockets. Being at the back, when the boat is underway with a bow-up angle, the reservoir is lower than other parts of the system so the trapped air never makes its way to the reservoir (and the coolant never makes its way into filling the heat exchanger fully).

[goodmatt78]

Good tips....i did pull the rear manifold hex vents with everything off and didn't see coolant. If it runs hot next year..... I'll vent there with it running.

[LakesideRec]

Post edited to remove unnecessary quote. See Quote Guidelines here.

I think the instructions say that you should fill the system such that coolant completely fills the system such that no air, just fluid is present at these vents.