I am trying to reconcile this discussion with my winterizing experience last year. I use a bucket of antifreeze in the cockpit and run a tube to the raw water intake inlet outside the hull. I did not see any water draw before I started the engine (or after) so even with that pressure head, I did not seem to be pushing water into the engine. Last year, it seemed to take a long time for the water to begin being sucked through from the bucket. At the time, I attributed this to it taking a while for the engine to warm up and the thermostat open. But now, when I look at the engine info I have, it looks like the thermostat is on the antifreeze circulating path, not on the raw water path. So why would there have been a delay in the draw from the bucket? Dave
On Oct 26, 2015, at 10:29 AM, Marek Dziedzic via CnC-List <cnc-list@cnc-list.com> wrote: > Dave, > > good thinking! > > Since the water came from behind (exhaust side), and you did not turn the > engine, there was a good chance that you would be able to suck most of it the > same way. > > However, I would not put too much faith in your impeller. If the impeller is > good, the pump should prime from the cockpit (no need to pour any water into > the hose). If it did not prime on its own, it means that it is not working > properly. The impeller may look good, but it may slip on the shaft or the > pulley (the v-belt) is slipping. I would be afraid that this may create some > cooling problems. There is nothing you need to do for the winter, but I would > think hard on addressing this before the next season. > > When you do your feed bucket method, do you have a shut off valve at the hose > from the bucket to the engine? If you don’t, adding it helps a lot, as you > can shut off the water (AF) feed from the cockpit and turn the engine off, > when the water is pumped out of the hose. > > Btw. If you don’t like the idea of having any head of water in front of the > water pump, you can try a method with a bucket on the ground and a hose > leading from the bucket to the raw water intake throughhull. You can cut a > thread on the inside of that throughhull and screw in a barbed nipple into > it. The Good Old Boat Nov/Dec 2014 issue had an article on that. I have a > scanned PDF if you are interested. > > Marek > > From: davepulaski via CnC-List > Sent: Monday, October 26, 2015 3:40 AM > To: cnc-list@cnc-list.com > Cc: davepulaski > Subject: Stus-List Hydrolocked! > > Good news! > > I was able to resolve the hydrolock with no apparent ill effect on the > engine! It was quite an easy fix as well, didn't even need to mess with the > injectors. > > Here's what I did, following a suggestion of someone on this thread: > > I disconnected the exhaust hose from the manifold and connected my shop vac > to the header outlet. Then, with the vac running and all three > decompression levers open, I turned the engine by hand a few times from the > main pulley, then spun it a bit with the starter motor. > > After closing the decompression levers, reconnecting the exhaust and setting > up my water feed bucket - this time in the aft cabin and NOT up in the > cockpit - I went for ignition. It fired up more readily than I expected, and > ran great with no new vibrations or noises. The raw water pump impeller was > completely intact and looked like new. > > The oil was a little milky so I changed that twice, ran the motor for a while > to get it up to temp, then finally winterized it from the bucket. > > Hooray for a lesson learned without injury or great expense. > > > Thanks for all the advice guys! > > -Dave > > > > > Sent from my T-Mobile Galaxy Note 2 > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the bottom > of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the bottom > of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > Aries 1990 C&C 34+ New London, CT
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