I Might Need a New Engine
January 28, 2026 · 35 min · 11K views
What this video covers
To diagnose persistent white smoke from a Yanmar diesel engine, the owner of a sailboat performs a series of troubleshooting steps, beginning with checking for fuel in the oil and inspecting the Racor fuel filter.2:42 After confirming the oil level remained stable, he identifies an air leak in the Racor housing.3:37 Despite addressing the leak, the engine continues to produce excessive white smoke upon startup.5:58 He observes significant corrosion on the fuel injector lines and decides to replace all fuel injectors at a cost of approximately $1,600.19:54 During the removal process, he encounters a seized fitting, which he eventually replaces with a part sourced from Tacoma Screw.28:19 After installing the new injectors, torquing them to specification, and bleeding the fuel lines, he runs the engine for 40 minutes.31:13 The engine starts reliably and shows a reduction in smoke compared to previous tests.33:22
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