Disconnect the fuel hose from the fuel pump (see Fuel
Hose Replacement in the Periodic Maintenance chapter).
Be sure to place a piece of cloth around the fuel outlet
pipe of the fuel pump.
Fuel is flammable and explosive under certain con-
ditions and can cause severe burns. Be prepared
for fuel spillage; any spilled fuel must be completely
wiped up immediately. When the fuel hose is dis-
connected, fuel spills out from the hose and the
pipe because of residual pressure. Cover the hose
connection with a piece of clean cloth to prevent
Connect the prepared fuel hose [A] to the fuel outlet pipe
of the fuel pump.
Secure the fuel hose with a clamp.
Insert the fuel hose into the measuring cylinder [B].
Wipe off spilled out fuel immediately.
Be sure to hold the measuring cylinder vertical.
Turn the engine stop switch to run position.
Turn the ignition switch on.
The fuel pump should operate for 3 seconds, and then
Do not drive the fuel pump for 3 seconds or more
without the fuel in the fuel tank. If the fuel pump is
driven without the fuel, it may be damaged.
Measure the discharge for 3 seconds.
Repeat this operation several times.
Amount of Fuel Flow
50 mL (1.7 US oz.) or more for 3 seconds
Turn the ignition switch off.
If the fuel flow is much less than the specified, replace the
fuel pump (see Fuel Pump Removal/Installation).
Install the removed parts (see appropriate chapters).
Start the engine and check for fuel leakage.
FUEL SYSTEM (DFI) 3-75