On my former Yanmar 3GM engine with a fresh water cooling, the temperature alarm either failed (unlikely since it had worked previously) or when the cooling system was completely out of water, it did not indicate a high temperature. Perhaps it needed a fluid to work.
Anyhow, I was made aware of the problem when the engine quit; determined later that the cooling system was completely empty and that as a result, the head was cracked. Charlie Nelson s/v Water Phantom [email protected] -----Original Message----- From: Prime Interest via CnC-List <[email protected]> To: kenheaton <[email protected]>; cnc-list <[email protected]> Sent: Mon, May 26, 2014 10:31 am Subject: Re: Stus-List Seacocks Mark, I'm surprised that your temperature alarm didn't eventually go off at some point in your adventure. Maybe something to check if you didn't get the alarm. You should probably check that the water pump impellor hasn't lost any vanes when running dry and now stuck in your heat exchanger. Also check that your lift muffler and hoses have survived the hot exhaust. I have an independent temperature alarm on the exhaust hose which will activate well before the engine temp alarm alerts you of a similar coolant problem. thanks ed vanderkruk s/v Prime Interest 1982 C&C 38 Landfall Toronto, Canada LF 38, S/N: 229 [email protected] www.primeinterest.blogspot.com On 25 May 2014 20:13, M Bod via CnC-List <[email protected]> wrote: OK. Boat got off the dock today. After a bunch of engine work, new hoses and new fuel tank (all installed by mechanic) everything is supposed to be working smoothly. Well. Getting off the dock was not so smooth. Couldn't sort out why roller furler was jamming for a bit. Finally sorted the issue, started the engine, made sure all looked good (exhaust a little louder than I expected, but not bad). Off we went (had a friend along to assist moving the boat from the marina to a nearby cove where it can stay an extra week). 10 min out I see some smoke riding through the companion way. Throttle down. Full off engine cowling. Coolant everywhere! Must have a leak. We turn around to limp back to the dock. I'm looking at the mess with the coolant boiling over when I realize (OK remember mechanic warned me) the seacock for the engine is CLOSED!!! Opened the seacock. Everything cooled off. We had burned off much of our coolant - so I poured in a 1/2 litre water bottle. Kept the engine at low rpm and made the run to the cove. Little hitch at the end. Went to furl the jib but too much sail and not enough line on the furling drum. Only managed to pack away 2/3 of the sail. Solved that by doing 10 clockwise circles in the bay to wrap the sail around the forestay! Dirty, but it worked. All told we survived. Feel like a royal idiot for forgetting the seacock. Had pretty good water shooting out of the muffler after - but I figure I better pull the impellor and check/replace it anyway. I had checked the exhaust when we started - saw splashes. But later realized I was looking at the air exhaust hitting the water and causing a little splash. Still a little shell shocked from the experience but thinking I'll likely remember the seacock in the future!!!!! Mark _______________________________________________ This List is provided by the C&C Photo Album Email address: [email protected] To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: [email protected] To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
_______________________________________________ This List is provided by the C&C Photo Album Email address: [email protected] To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
