Checking injector flow capacity (B235R, B205L/R)
WARNING: This page is about a different car, the 2003 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 vapors is available, be sure to use it.
- Wear suitable gloves! Prolonged contact with fuel can cause skin irritation or dermatitis.
- 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 (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 (B235R, B205L/R) .