A4 V6-3.0L (AVK) (2004)
Fuel Injector: Testing and Inspection
With Generic Scan Tool
Injection Quantity, Proper Seal And Spray Pattern Of Fuel Injectors, Checking
Recommended special tools and equipment
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VAG1348/3A remote control with VAG1348/3-2 adapter cable
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VAG1594A connector test kit
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VAG1598/31 test box
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V.A.G 1602 tester for quantity of injected fuel
Test requirements:
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Fuel pressure OK, checking.
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Ignition switched off.
Test sequence
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Remove fuel distributor including fuel injectors from intake manifold. Fuel lines remain connected.
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Connect test box to wiring harness of Engine Control Module (ECM); ECM is not connected. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Text Box, Connecting For Wiring
Test
Checking Proper Seal
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Bridge terminals 1 and 65 at test box using wires e.g. from V.A.G 1594 A adapter test kit.
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Switch ignition on.
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Fuel Pump (FP) must run.
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Check proper seal of fuel injectors (visual inspection). With Fuel Pump (FP) running, only 1...2 drops per minute may drip out per injector.
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If fuel loss is greater, stop Fuel Pump (FP) from running (switch off ignition) and replace faulty fuel injector.
Checking Injection Quantity