Float Test

Make sure the fuel tank is less than half full.
Remove the fuel fill cap to relieve the fuel tank pressure, then reinstall the cap.
Remove the bolts and fuel tank vapor control valve cover (A).

Fig 1: Removing The Bolts & Fuel Tank Vapor Control Cover
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Remove the bolts (A).

Fig 2: Removing The Bolts
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the fuel tank vapor recirculation tube (A), and connect a vacuum pump to the tube.

Fig 3: Disconnecting The Fuel Tank Vapor Recirculation Tube
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Plug the fuel tank vapor recirculation port (B).
Apply vacuum to the fuel tank vapor recirculation tube.
- If the vacuum holds, replace the fuel tank vapor control valve (see Fuel Tank Vapor Control Valve Replacement ).
- If the vacuum does not hold, the float is OK. Go to step 1 of the valve test (see Valve Test ).