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.

NOTE: For other tests mentioned within this test procedure, see Powertrain Management, System Diagnosis. Testing and Inspection

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

M�|��|.:}Test Procedure:

Fig. 1:

Connecting 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: