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Checking injector flow capacity

Checking injector flow capacity

To remove



1. Remove the fuel rail with injectors as described in steps 1-6 in the section “injectors, see

2. Start the fuel pump by connecting jumper lead 83 93 886 between fuses 4 and 32. Make sure the injectors are not leaking.

3. Connect test hose 83 94 405 to the injector that is to be tested. The hose should feed into a graduated measuring cylinder. Connect the injector to battery voltage using 86 11 410 Test cable, female pin (x4) and 86 11 345 Jumper cable (x2) . Activate the injector for exactly 30 seconds. Check that the amount of fuel in the measuring cylinder is 126 ± 5 ml. The maximum permitted difference between valves is 18 ml.


4. Change any defective injectors.


Warning

Provide adequate ventilation!


To fit


1. Fit the fuel rail and injectors. Make sure the correct connector is plugged to the relevant injector, see


Checking fuel pressure



See Service Manual "2:3 Fuel System" for checking the fuel pressure/fuel pressure regulator.