Touareg V8-4.2L (BHX) (2004)
Pay attention to the following when installing the injectors:
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Replace O-rings on all injectors and lightly moisten with clean engine oil.
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Insert injectors vertically and in the correct position into the fuel rail and secure with retaining clips.
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Install fuel rail with injectors installed and secured onto intake manifold lower part and press in evenly.
Checking injected quantity
Checking conditions
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Fuel pump relays and fuses 13 and 14 are in their sockets.
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Connect test box V.A.G 1598/31 and bridge text box sockets 1 and 65 using adapter leads from adapter set V.A.G 1594.
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Insert injector to be checked in a measuring glass of tester V.A.G 1602.
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Connect one contact of injector to be tested to engine Ground using auxiliary cables from V.A.G 1594.
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Connect second injector contact with auxiliary cable to remote control V.A.G 1348/3 using adapter cable V.A.G 1348/3-2.
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Connect alligator clip to battery positive (+) terminal -1- in engine compartment.
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Switch on ignition.
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Operate remote control V.A.G 1348/3 for 30 seconds.
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Repeat check on other injectors. Use another measuring beaker for each injector.
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Switch off ignition.
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After all injectors have been activated, place measuring beakers on a horizontal surface and compare injected quantity.
Specification: 98 to 115 ml per injector
If the measured values of one or more injectors are above or below the prescribed specifications:
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Replace faulty injector.
Perform installation of injectors in reverse order. Note the following:
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Replace O-rings on all injectors and moisten with clean engine oil.
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Insert injectors vertically and in the correct position into the fuel rail and secure with retaining clips.
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Install fuel rail onto intake manifold with injectors secured and press in evenly.