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volkswagen Workshop Repair Guides


Eos (1F7) V6-3.2L (BUB) (2008)

Powertrain Management > Fuel Delivery and Air Induction > Fuel Injector > Component Information > Testing and Inspection > Fuel Injectors, Leak and Injection Quantity, Checking > Page 3224

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Connect the second fuel injector terminal using (V.A.G 1348/3 - 2) to the (V.A.G 1348/3A).

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Connect the alligator clip to the battery positive terminal (positive terminal in the engine compartment).

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Operate the (V.A.G 1348/3A) for 30 seconds.

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Repeat the check on the other injectors. Use new graduated measuring glasses for this.

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After all fuel injectors have been activated, place the graduated measuring glasses on a level surface and compare quantity of injected fuel.

‹› Specified value: 128 to 140 ml per valve

While checking the injection quantity, the spray pattern should also be checked.

‹› Spray pattern must be the same for all fuel injectors.

If the measured value of one or more fuel injectors is below or above the indicated specified value:

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Replace the faulty fuel injector. Refer to => [ Fuel Rail Overview ] See: Fuel Rail/Service and Repair.

Perform installation of injectors in reverse order. When doing this note the following:

‹› Replace O-rings on all injectors and lightly lubricate with clean engine oil.

‹› Insert fuel injectors into the fuel rail perpendicular and in the correct position, and secure them with retaining clips.

‹› Position the fuel rail with the secured fuel injectors onto the cylinder head and apply uniform pressure to press it in.

‹› If the fuel injectors are replaced, erase adaptation values and adapt the Engine Control Module (ECM) again. Refer to "Guided Functions" in the

vehicle diagnostic tester.

Powertrain Management > Fuel Delivery and Air Induction > Fuel Injector > Component Information > Testing and Inspection > Fuel Injectors, Leak and Injection Quantity, Checking > Page 3224

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