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Diagnosis, Troubleshooting, and a mini shakedown in San Diego - Dana 24 - (Dec 2018)
December 24, 2018 · 14 min · 1K views · San Diego Bay
What this video covers
Mark troubleshoots a suspected engine overheating issue on a Dana 24 in San Diego, California. After inspecting the cooling system, he discovers the coolant reservoir is plumbed directly into the freshwater cooling system rather than acting as a standard overflow tank.4:03 He tops off the coolant and engine oil, then uses a GoPro attached to a boat pole to inspect the propeller.4:00 He finds stringy kelp wrapped between the cutlass bearing and the prop, which likely restricted water flow.7:19 He also notes the propeller zinc is missing, suggesting potential stray current damage.9:08 To address potential scale buildup in the heat exchanger, he runs Barnacle Buster through the raw water strainer, allowing the solution to soak for two hours before flushing the system.12:12 A test run at 2200 RPM confirms the engine temperature remains stable at 172 degrees Fahrenheit.11:21 Replacing the raw water pump and heat exchanger pressure cap are planned as future maintenance steps.1:34 Clearing debris from the propeller and descaling the heat exchanger can resolve engine overheating caused by restricted water flow.
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