Disconnect the fuel cut-off relay 4P connector.
Jump the Brown and Black/white wire terminals of the wire harness side using a jumper wire.
When the fuel return hose is disconnected, gasoline will spill out. Place an approved gasoline container under the hose and drain the gasoline.
Wipe off any spilled out gasoline.
Disconnect the fuel return hose at the pressure regulator, plug the fuel return hose.
Turn the ignition switch to "ON" for 10 seconds. Measure the amount of the fuel flow.
Amount of fuel flow: 188 cm3 (6.4 US oz, 6.6 Imp oz) minimum/10 seconds
If the fuel flow is less than specified, inspect the following:
- Pinched or clogged fuel hose and fuel return hose
- Clogged fuel filter
- Pressure regulator
- Fuel pump (see below)
After inspection, connect the fuel return hose to the pressure regulator.
Start the engine and check for leak.