Checking injector flow capacity
WARNING:
Removal of the fuel pressure regulator involves partial dismantling of the car's fuel system. The following points must therefore be observed in connection with this work:
- Work only in a well-ventilated area! If approved equipment for the extraction of fuel vapor is available, be sure to use it.
- Wear suitable gloves! Prolonged contact with fuel can cause skin irritation or dramatist.
- Keep a class BE fire extinguisher near at hand. Be mindful of the danger of sparks caused by short circuits and when connecting and disconnecting leads in electrical circuits.
- No smoking anywhere in the vicinity,
- Wear protective goggles.
IMPORTANT:
Scrupulous cleanliness is of the utmost importance when working on the fuel rail and injectors. Thoroughly clean the injectors, fuel rail and intake manifold and blow dry with compressed air.
- Remove the fuel rail as described under FUEL RAIL WITH INJECTORS, 4-CYL .
- Fit a transparent hose onto the nozzle. This hose should be about 40 cm long and have an inside diameter of 15 mm.
- Place the end of the hose in a receptacle or measuring flask.
- Connect each injector to its proper connector.
- Start the fuel pump by connecting diagnostics cable 83 93 886 LEAD FAULT DIAGNOSIS, LH SYSTEM to the upper pin on fuse no. 8 and the lower pin of fuse no. 19.
- Perform a flow capacity test with the diagnostic tool. The diagnostic tool then activates the injector concerned with battery voltage for exactly 30 seconds.
- Check the quantity of fuel against the table below.
- Replace any defective injectors.
- Fit the fuel rail as described under FUEL RAIL WITH INJECTORS, 4-CYL .
FUEL RAIL DESCRIPTION
| Engine type | Flow capacity | Maximum permissible difference between injectors | ||
|---|---|---|---|---|
| B235E | ml/30s | 176 +/- 7 | ml | 14 |
| B205E | ml/30s | 127 +/- 5 | ml | 10 |