A worrying, stressful check on engine water flow
22 April 2023 · 17 min · 336 views · Corral del Risco
What this video covers
A solo sailor anchored in Punta de Mita, Mexico, performs a diagnostic test on the engine’s seawater cooling system to investigate potential overheating issues.5:14 The procedure involves disconnecting the hose at the heat exchanger outlet to verify water flow while the engine idles in neutral.5:59 To protect the engine's electrical harness from water spray, the sailor covers the wiring with cloths before starting the engine.9:10 After confirming a strong flow of seawater, the hose is reconnected and the engine is run for 20 minutes to monitor temperatures at the exhaust elbow and seawater pump cover using a heat sensor.16:26 The test confirms that the existing seawater pump is damaged, causing premature impeller failure and subsequent overheating.16:50 The sailor plans to sail to La Cruz to install a replacement pump.4:56 Testing cooling flow by manually disconnecting the heat exchanger hose provides a definitive, real-time check of pump performance and water circulation.
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