S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
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Fuel Pressure: Testing and Inspection
WARNING!
When working with fuel or parts of the fuel system:
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DO NOT smoke.
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DO NOT use heaters or have anything else in the area that could ignite fuel.
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Protect eyes and skin.
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Always have a fire extinguisher readily available. Be prepared for residual fuel pressure in the system. When loosening fuel line
connections:
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Loosen fittings slowly to allow pressure to be relieved.
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Be prepared to collect fuel that is discharged.
CAUTION!
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Always clean fuel line connections and surrounding area before loosening fittings.
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Always replace seals and fuel hose clamps.
Requirements
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Fuse 17 (in fuse holder) OK
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Fuel filter OK
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Battery: minimum 12 volts available
Checking system fuel pressure
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Remove fuse 17 from fuse holder.
Fuse 17 Terminals 1 & 2 In Fuse Panel
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Connect remote control VW 1348/3A (using adapter lead VW 1348/3-2 and adapter cables from VW 1594) between:
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Fuse 17 terminal -2- and
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Positive (+) remote connection in engine compartment
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Disconnect vacuum hose from fuel pressure regulator.
Fuel Pressure Gauge Set
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Connect pressure gauge VW 1318 into fuel supply line as shown, using adapters VW 1318P and VW 1318/15.
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A = Fuel supply line from tank
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B = Fuel line to fuel rail
Note:
