3-72 FUEL SYSTEM (DFI)
Start the engine, and let it idle.
Measure the fuel pressure with the engine idling.
294 kPa (3.0 kgf/cm², 43 psi) with engine
The gauge needle will fluctuate. Read the pressure at
the average of the maximum and minimum indications.
Stop the engine.
If the fuel pressure is much higher than specified, replace
the fuel pump because the fuel pressure regulator in the
fuel pump have been clogged or stuck.
If the fuel pressure is much lower than specified, check
Fuel Line Leakage (see Injector Fuel Line Inspection)
Amount of Fuel Flow (see Fuel Flow Rate Inspection)
After above checks, measure the fuel pressure again.
Remove the fuel pressure gauge, hoses and adapter.
Install the removed parts (see appropriate chapters).
Start the engine and check for fuel leakage.
Fuel Flow Rate Inspection
Gasoline is extremely flammable and can be ex-
plosive under certain conditions. Always stop the
engine and do not smoke. Make sure the area is
well-ventilated and free from any source of flame
or sparks; this includes any appliance with a pilot
Be sure the battery is fully charged.
Wait until the engine cools down.
Prepare the fuel hose (Special Tool: 57001-1607) and a
Special Tool - Fuel Hose: 57001-1607
Remove the fuel tank bolt and tank mounting band (see
Fuel Tank Removal).