Passat Sedan L4-1781cc 1.8L Turbo (AEB) (1999)
Fuel Pressure Regulator: Testing and Inspection
Residual pressure and fuel pressure regulator, checking
The fuel pressure regulator controls the fuel pressure dependent upon intake manifold pressure.
Special tools, testers, measuring instruments and auxiliary items required
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VAG 1318 Pressure tester
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1318/6 adaptor
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1318/7 adaptor
WARNING!
Fire hazard! Do not have anything in area that can ignite fuel!
Test conditions
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Fuel pump delivery rate OK
Test sequence
WARNING!
Fuel system is under pressure! Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the
connection.
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Open the union -arrow- and catch escaping fuel with a cloth.
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Connect pressure gauge VAG 1318 to fuel supply pipe -1- and to fuel rail using adaptors 1318/6 and 1318/7.
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Open shut-off tap on pressure gauge.