Fuel System Pressure and Internal Leakage Test

Special Tools:

Test Data:

NOTE: In case of complaints about engine hesitation during full load operation, the fuel pump should be checked (see Fuel Pump Delivery Test).

Test Condition
The ignition system must be in good working order. The idle speed must be within specification.

�z�\z�zTest Procedure:

Fuel Pump Relay Location:

Fig. 1:

- Connect pressure gauge.

Pressure Gauge 1st Version:

Connection 1 at fuel distributor lower chamber
Connection 2 at pressure gauge
Connection 3 at cold start valve (fuel distributor upper chamber)

Pressure Gauge 2nd Version:

Connection A at fuel distributor lower chamber
Connection B at cold start valve (fuel distributor upper chamber)

Fig. 2:

Fig. 3:

Fig. 4:

Fig. 5:

Fig. 6: