3-114 FUEL SYSTEM (DFI)
Injector Fuel Line Inspection
Remove the nozzle assy (see Nozzle Assy Removal).
Remove the throttle body assy (see Throttle Body Assy).
Check the injector fuel line for leakage as follows:
Connect a commercially available vacuum/pressure
pump [A] to the nipple of the delivery pipe [B] with the
fuel hose [C] (both ends connected with the clamps [D])
Apply soap and water solution to the areas [E] as shown.
Watching the pressure gauge, squeeze the pump lever
[F], and build up the pressure until the pressure reaches
the maximum pressure.
Fuel Line Maximum Pressure
300 kPa (3.06 kgf/cm², 43 psi)
During pressure testing, do not exceed the maxi-
mum pressure for which the system is designed.
Watch the gauge for at least 6 seconds.
If the pressure holds steady, the system is good.
If the pressure drops at once, or if bubbles are found in
the area, the line is leaking. Replace the delivery pipe,
injectors and related parts (see appropriate sections).
Repeat the leak test, and check the fuel line for no leak-
Install the throttle body assy (see Throttle Body Assy In-
Install the nozzle assy (see Nozzle Assy Installation).
Run the hoses correctly (see Cable, Wire, and Hose Rout-
ing section in the Appendix chapter).