Catamaran Mistertong video
#242 The engine is no longer spitting!!!
8 August 2026 · 45 min
What this video covers
The owners of a catamaran undergoing a long-term refit on the hard troubleshoot a cooling system failure after attempting to run the engines for the first time in three months. While testing the engines using a water barrel, the crew observes no water discharge from the exhaust, indicating a failure in the raw water pump.18:19 Upon disassembling the pump housing, the owner discovers the paper gasket has disintegrated and the rubber impeller is deformed and showing signs of wear.23:51 The owner replaces the impeller and the gasket, noting that the cooling circuit likely lost its prime because the saildrives were serviced and left open, allowing the system to dry out.24:43 To prevent future airlocks, the owner plans to manually prime the raw water circuit before restarting the engines.25:27 Beyond the mechanical repair, the crew continues structural work, including sanding the hulls for a second coat of grey paint and planning the reconstruction of a rotted bulkhead in the engine compartment using 15mm plywood.22:17
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