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Forum: Construction, Maintenance & Refit

20-07-2019, 21:17

Replies: 24

Sea water back-flow through engine

Views: 2,834

Posted By Karanga

Re: Sea water back-flow through engine

Unfortunately, it is not possible yet to assume water is no longer getting in. The current assumption is that it is getting in via the exit (exhaust) system.
The plan is to flush several times with...

Forum: Construction, Maintenance & Refit

20-07-2019, 20:04

Replies: 24

Sea water back-flow through engine

Views: 2,834

Posted By Karanga

Re: Sea water back-flow through engine

A) Perfect description of the situation
B) Excellent process to identify the cause (find the flaw in the design)

Compression testing was done about 1 month ago. Cylinders 1 to 3 were consistently...

Forum: Construction, Maintenance & Refit

20-07-2019, 16:50

Replies: 24

Sea water back-flow through engine

Views: 2,834

Posted By Karanga

Re: Sea water back-flow through engine

The anti-siphon is installed between the gearbox and the heat exchanger exhaust elbow. It appears to be functioning and not blocked with salt crystals, crud etc.

The battery negative IS connected...

Forum: Construction, Maintenance & Refit

20-07-2019, 15:40

Replies: 24

Sea water back-flow through engine

Views: 2,834

Posted By Karanga

Re: Sea water back-flow through engine

He has had a starting issue. Previous owner installed lithium start batteries. Charging is by way of Balmar 614 regulators and VSR's to charge house batteries , and he doesn't think they ever get to...

Forum: Construction, Maintenance & Refit

20-07-2019, 02:48

Replies: 24

Sea water back-flow through engine

Views: 2,834

Posted By Karanga

Re: Sea water back-flow through engine

Mechanic's diagnosis was over the phone, without seeing the actual boat. He says he has come across this on other (number?) boats.

A few months ago, I checked underwater for blockages in his...

Forum: Construction, Maintenance & Refit

20-07-2019, 02:47

Replies: 24

Sea water back-flow through engine

Views: 2,834

Posted By Karanga

Forum: Construction, Maintenance & Refit

19-07-2019, 23:56

Replies: 24

Sea water back-flow through engine

Views: 2,834

Posted By Karanga

Sea water back-flow through engine

I am sailing alongside a guy with a Leopard 38 (I think) powered by newish Westerbeke motors, which have standard heat exchangers and pong-boxes.

He has significant water in his oil. As in grey....

Showing results 1 to 7 of 7

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