90S Quattro (Canada) V6-2.8L (AAH) (1993)
Injector Test
-
Connect one terminal from fuel injector to be tested to GND using test harness and clip from VW 1594 connector test kit.
-
Connect second terminal of fuel injector to B+ using remote control VAG 1348/3 A, adapter harness VAG 1348/3-2 or equivalent, and a test
harness.
-
Use On-Board Diagnostics (OBD) output diagnostic test mode to activate fuel pump relay -J17-. See: Computers and Control Systems/Testing
and Inspection
^
Fuel pump should run
-
Operate injector, using remote, for 30 seconds.
-
When all three fuel injectors from one cylinder bank have been activated, place measuring beakers on a level surface.
^
Specified quantity per fuel injector: 85-100 ml
If the measured quantity of one or more of the fuel injectors is greater or less than the specified value:
-
Replace faulty fuel injector(s).
To complete the test:
-
Repeat test on fuel injectors in second bank of cylinders.
If measured values of all fuel injectors are greater or less than specified value:
-
Check system pressure.
-
Install fuel injectors in the reverse order of removal.
-
Replace O-rings for all fuel injectors and moisten slightly with clean engine oil.
-
Slide fuel injectors vertically and in correct positions into fuel rail and secure with clamps.
-
Install fuel rail with secured fuel injectors Onto manifold and press in uniformly.