5000S Quattro Sedan L5-2309cc 2.3L SOHC (NF) (1988)
Fuel Pressure Check Valve: Service and Repair
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remove fuel pump
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remove check valve (arrow)
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install new check valve with new seal
CAUTION: Do not clamp fuel pump in vise or damage will result
WARNING: Fire hazard. Do not smoke or have anything in area that can ignite fuel