Frequently Asked Questions

  • Most engines require annual service or every 100 engine hours, whichever comes first.

  • Primary and secondary fuel filters should be changed every 100–200 hours or annually in Seattle’s climate.

  • Overheating results from worn impellers, blocked strainers, clogged heat exchangers, thermostat issues, or exhaust restrictions.

  • White smoke indicates unburned fuel or low compression; blue signals oil burning; black smoke means an over-fueling condition or restricted airflow.

  • Yes. A general survey rarely includes a deep mechanical inspection. An engine inspection can reveal issues costing thousands of dollars.

  • High moisture, salt air, and temperature changes accelerate corrosion, microbial growth in fuel, and electrical failures.

  • Keep tanks full during winter, treat fuel with biocide, and replace fuel filters regularly.

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