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 fuel pipe cover. Disconnect the fuel tank vapor recirculation tube (A), and connect a vacuum pump/gauge, 0-30 in.Hg, to the tube.
- Plug the line (B).
- Apply vacuum to the fuel tank vapor recirculation tube (A).
- 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. Do the valve test.