As for it going into the exhaust, there are two ways. One is through the head gasket, which should result in steam coming out of the exhaust, and the other would be through pinhole leaks in the heat exchanger, which with some diesels is a relatively common occurrence. But yes, check the bilge, and then check the oil for any milkyness. If it persists and you don't have steam coming out your exhaust, then I would highly suspect the heat exchanger. A boat buddy of mine with a Westerbeke had a similar problem and he had the heat exchanger repaired as opposed to replacing it. I can track down the guy that did it for him if you would like.Hoping you find this helpful,Bruce 1994 C&C 37/40+Sent from Samsung tablet. -------- Original message --------From: "Della Barba, Joe via CnC-List" <cnc-list@cnc-list.com> Date: 5/13/20 10:35 AM (GMT-05:00) To: cnc-list@cnc-list.com Cc: "Della Barba, Joe" <joe.della.ba...@ssa.gov> Subject: Re: Stus-List Loss of coolant
It is only going one of three places – the bilge, the exhaust, or the oil. Check the oil for coolant contamination ASAP and check the exhaust for excess steam and/or white smoke. The bilge should be obvious ;) Joe Della Barba DCSI 410-966-7255 From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Bill Coleman via CnC-List Sent: Wednesday, May 13, 2020 9:34 AM To: cnc-list@cnc-list.com Cc: Bill Coleman <colt...@gmail.com> Subject: [EXTERNAL] Re: Stus-List Loss of coolant Not in a 3JH4E, but I did in my Olds Custom Cruiser Wagon, with one of those 350 Modified Diesel Engines. Those were not up to the task which I knew going in, but I just loved that car. It was common for warpage at the head gasket, I think the coolant leaked into the oil, tho it may have gone out the exhaust, I don’t remember anymore. I just remember loosing the coolant, and several hundred dollars. Bill Coleman Erie PA From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Glenn Henderson via CnC-List Sent: Wednesday, May 13, 2020 8:47 AM To: cnc-list@cnc-list.com Cc: Glenn Henderson Subject: Stus-List Loss of coolant My Yanmar 3JH4E has been slowly leaking coolant. I motored for 14 hours and it lost 5mm of depth in the reservoir. The reservoir is approximately 4" DIA. I checked thoroughly for visible signs of leaking and found none. Has anyone had this experience? Glenn Henderson WeGo C&C 41
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