Dave,
I wouldn't lose a lot of sleep. I hydrolocked my Universal Diesel a
few years ago (no anti-siphon loop in the exhaust plumbing). Tried to
start it but it wouldn't turn over. Like you, I thought it had a dead
battery so a added 4 more house batteries. Starter got hot, but didn't
turn over. At this point it occurred to me that the engine was
hydrolocked. A couple of days later I took a BIG socket wrench and SLOWLY
turned the engine over. It wasn't easy, but it eventually turned over.
You have it much easier, because Yanmars have a compression release on the
top of the vale cover. Just release the compression and turn the engine
over and it will expel the water. After several rotations, I started the
engine. I ran it for a few minutes and then changed the oil and filter.
After 5 years, it still runs great (just sold it).
Gary
~~~~~~~_/)~~~~~~
On Thu, Oct 22, 2015 at 3:47 AM, David Pulaski via CnC-List <
[email protected]> wrote:
> Thanks all for the words of advice! I'm going to be a wreck until Sunday
> when I can get there to try to resolve this situation.
>
> So here's how I managed to do this:
>
> I was attempting to winterize the engine, boat still in the water. First
> I just ran the engine normally for a while, maybe 30-45 minutes, while I
> got everything ready. After I shut it down and closed the raw water intake
> seacock, here was my winterizing plan: 5 gallon bucket sitting on the
> cockpit sole, filled with pink antifreeze. A length of hose running
> through the opening port in the aft cabin from the cockpit to the engine
> compartment, connected to the raw water side of the water strainer. Seemed
> simple enough: I could start the engine and watch the level in the bucket,
> adding more if necessary.
>
> My big mistake was attempting to prime the hose with antifreeze. I was
> just using a small cup to pour some antifreeze into the hose from the end
> up in the cockpit; no pressure. It didn't occur to me that the small
> height differential would be enough to push water past the raw water pump
> into the cylinders, but apparently it did. I didn't realize what had
> happened until I attempted to start the engine, and it wouldn't turn over.
> At first I thought the batteries didn't have enough juice to restart after
> my cold startup a few moments earlier. I stabbed the button a couple of
> times, and then it dawned on me.
>
> I went back down below and disconnected the exhaust hose from the manifold
> riser, and sure enough, pink poured out. Perhaps I'm having a stupid
> moment but I'm really still scratching my head over this. I really didn't
> pour much down the hose, just a couple of cups. But I'm actually somewhat
> hopeful that the contents of the cylinders is mostly antifreeze - should
> give some corrosion protection I'm hoping.
>
> Until sunday...
>
> -Dave
>
>
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