Home made fuel polishing system: NO MORE DIESEL BUG! - (Episode 351)
February 15, 2026 · 23 min · 192K views · Langkawi Island
Crew in white suits apply fiberglass to catamaran hull.
What this video covers
The crew of the Lagoon 450 *Parlay Revival* installs a custom fuel polishing and transfer system to manage diesel contamination and enable cross-tank fuel supply.2:08 The design utilizes existing Racor water separators and a 10-liter-per-minute pump, though initial testing reveals a flow rate of 5.7 liters per minute, exceeding the manufacturer’s 3.75-liter-per-minute specification for the filters.12:44 To mitigate potential separation issues, the owner considers throttling the supply valve or further testing the pump's current draw.14:38 The system includes one-way valves on engine return lines to prevent back-feeding and allows for isolating individual tanks.5:05 Separately, the crew performs hull repairs on the hard, grinding out blisters to reach the balsa core.0:19 They apply polyester resin for repairs above the waterline to ensure compatibility with gelcoat, while using epoxy for below-waterline sections.17:21 After drying the core with a dehumidifier for two weeks, they confirm moisture levels are acceptable before re-glassing.21:35
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