Start the engine, and let it idle.
Measure the fuel pressure with the engine idling.
Fuel Pressure (Idling)
294 kPa (3.0 kgf/cm², 43 psi)
The gauge needle will fluctuate. Read the pressure at
the average of the maximum and minimum indications.
If the fuel pressure is much higher than the specified,
the fuel pressure regulator in the fuel pump have been
clogged or stuck. Replace the fuel pump (see Fuel Pump
If the fuel pressure is much lower than the specified,
check the following.
Fuel Line Leakage
Amount of Fuel Flow (see Fuel Flow Rate Inspection)
If the fuel pressure is much lower than specified, and if
inspection above checks out good, replace the throttle
body assy or the fuel pump and measure the fuel pressure
Remove the fuel pressure gauge, fuel hoses and adapter.
Install the fuel hose joint (see Fuel Tank Installation).
Run the fuel hose correctly (see Cable, Wire, and Hose
Routing section in the Appendix chapter).
Install the fuel tank (see Fuel Tank Installation).
Fuel Flow Rate Inspection
Be sure the battery is fully charged.
Gasoline is extremely flammable and can be ex-
plosive under certain conditions, creating the
potential for serious burns. Make sure the area is
well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
light. Do not smoke. Turn the ignition switch OFF.
Be prepared for fuel spillage; any spilled fuel must
be completely wiped up immediately.
Turn both ignition switch, and engine stop switch OFF.
Wait until the engine cools down.
Open the fuel tank cap [A] to lower the pressure in the
FUEL SYSTEM (DFI) 3-105