Checking injector flow capacity (B235R, B205L/R)
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
This check involves partial dismantling of the car's fuel system. The following points must therefore be observed in connection with the work:
- Work only in a well-ventilated area! If approved equipment for the extraction of fuel vapours is available, be sure to use it.
- Wear suitable gloves! Prolonged contact with fuel can cause skin irritation.
- Keep a class BE fire extinguisher close at hand! Beware of sparks caused by short circuits and when connecting and disconnecting leads in electrical circuits.
- No smoking anywhere in the vicinity.
IMPORTANT:
The utmost cleanliness must be observed when handling the fuel rails and injectors. Wash around the injectors, fuel rail and intake manifold and dry with compressed air.
- Remove the fuel rail as described under Fuel Rail With Injectors (B235R, B205L/R) .
- Attach the fuel connections to the fuel rail.
Fit a transparent hose to the nozzle. The hose should be approx. 40 cm long with an inner diameter of 15 mm.
- Direct the hose into a receptacle/measuring glass.
- Plug in the connectors to their respective injectors.
- Start the fuel pump by connecting jumper lead, 83 93 886 Diagnostics cable, LH system, between the lower pin of fuse 32 for the fuel pump and the upper pin of fuse 4 for the luggage compartment lighting.
- Conduct the flow capacity test using the diagnostic tool. The diagnostic tool will then activate the injector in question with battery voltage for exactly 30 s.
- After 30
seconds, the amount of fuel should be 176 +/- 7 ml
.
The difference between injectors must not exceed 14 ml .
- Change any defective injectors.
- Disconnect the fuel line connections from the fuel rail and fit the fuel rail as described under Fuel Rail With Injectors (B235R, B205L/R) .