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Old 01-13-2023, 11:22 PM
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ndutton ndutton is offline
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We should know what the liquid is, fuel or water, to be able to resolve this. The direction of Dave's post doubts it's fuel and more likely water. Easy enough to check with a taste test. Speaking of tests, it would also be good to know the general condition of the engine and exhaust configuration and condition. A water jacket pressure test on both the manifold and block separately and a compression test would tell us a bunch. A detailed description and pictures of the exhaust system would be very helpful too.

I have a 1977 Catalina 30 with probably the smallest volume waterlift muffler fitted anywhere, the Centek 150002 top in - top out, an anti-siphon vented loop as opposed to an anti-siphon valve, a swing check valve at the high point of the exhaust run to the transom and an external flapper at the outlet with never - and I mean never - a water incursion.
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Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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