Float Test

2006 Honda Insight StandardSECTION Float Test
  1. Make sure the fuel tank is less than half full.
  2. Remove the fuel fill cap to relieve the fuel tank pressure, then reinstall the cap.
  3. Remove the fuel pipe cover. Disconnect the fuel tank vapor recirculation tube (A), and connect a vacuum pump/gauge, 0-30 in.Hg, to the tube.
    Fig 1: Connecting Vacuum Pump/Gauge To Tube
    G03681210Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Plug the line (B).
  5. Apply vacuum to the fuel tank vapor recirculation tube (A).
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.