Fuel Injection Control System Inspection
EF & EC-639prose procedureSR20DE and SR20DET shown separately for fuel pressure check. Intercooler removal (step 2) applies to SR20DET only.
Fuel Pressure Check (Cont'd)
- 5Read the indication of fuel pressure gauge. At idling: When fuel pressure regulator valve vacuum hose is connected — Approximately 245 kPa (2.45 bar, 2.5 kg/cm², 36 psi). A few seconds after ignition switch is turned from OFF to ON — Approximately 294 kPa (2.94 bar, 3.0 kg/cm², 43 psi).
SEF310L - 6Stop engine and disconnect fuel pressure regulator vacuum hose from intake manifold.
- 7Plug intake manifold with a rubber cap.
- 8Connect variable vacuum source to fuel pressure regulator.
SEF718B - 9Start engine and read indication of fuel pressure gauge as vacuum is changed. Fuel pressure should decrease as vacuum increases. If results are unsatisfactory, replace fuel pressure regulator.
Injector Removal and Installation
- 1Release fuel pressure to zero.
- 2Remove intercooler. (SR20DET only)
- 3Disconnect injector harness connectors.
- 4Disconnect vacuum hose from pressure regulator.
- 5Disconnect fuel hoses from fuel tube assembly.
- 6Remove injectors with fuel tube assembly.
SEF311L