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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. Attach test hose 83 94 405 to the valve you wish to test. The hose should discharge into a graduated measuring glass. Connect the valve to battery voltage using 86 11 410 Test lead, female pin (x 4) and 86 11 345 Jumper lead (x 2) . Activate the valve for exactly 30 s. and then check that the amount of fuel in the measuring glass is 126±5 ml. The maximum permissible difference between the injectors 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.