Custom Boat Manual

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Starting a marine diesel

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The five-minute walk-through before you turn the key: bilge, oil, batteries, coolant, the raw-water strainer, glow plugs, and the flooding trap after failed starts.

Sources (5)
  • Pre-start checks: oil, coolant, belts and hoses, raw-water strainer; check water from the exhaust after starting — classicboat.co.uk
  • Engine-room checks before departure: oil, transmission fluid, belts and hoses, coolant, raw-water strainer — catamaranguru.com
  • Excessive cranking with a water-lift muffler can let sea water into the cylinders; close the seacock — tugnuts.com
  • The raw-water pump fills the water-lift muffler when the engine cranks without starting — forum.samlmorse.com
  • A fully charged 12 V lead-acid battery rests around 12.6 V — batteryuniversity.com

General guidance for recreational boaters — your engine and equipment manuals and local regulations come first.