Table of contents: Checking the drain tube for leaks ↓ Bleeding fuel pipes and hoses ↓ Checking the fuel injector assembly ↓
Checking the drain tube for leaks
Check before installing the valve cover.
Connect the vacuum pump to the drain pipe.
Create a vacuum and make sure it is maintained at a constant level.
- Standard vacuum during testing: -53.3 - (-66.7) kPa (-400 - (-500) mm Hg)
Bleeding fuel pipes and hoses
After installing the system, bleed air from the fuel lines and hoses using a lever and a bleed pump.
Checking the fuel injector assembly
Install the injector on the injector tester.
Pump the tester handle at a frequency of 1 time/sec and read the pressure at the moment of injection.
Standard pressure:
- 18.6-20.6 MPa (190-210 kg/cm²)
- Maximum pressure: 16.2 MPa (165 kg/cm²)
Note: Fuel injection occurs in two stages. However, injection pressure is estimated in the first stage.
Abnormal injection criterion:
- Injection jet lines not straight (B)
- Fuel drips from the injector (C)
- Uneven injection (D)
If the pressure is different from the standard, or if there is an abnormal fuel injection pattern, replace the injector assembly.
Attention: Do not disassemble the nozzle.