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Eliminating Noise From Fuel Pump|Page 1169 > < All Technical Service Bulletins for Fuel Injector O-Ring:|259005
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Fuel Pressure Check Valve: Technical Service Bulletins
Eliminating Noise "From Fuel Pump"

Applies To

4000,
COUPE

Group

20
Subject:

Fuel Line Check Valve

Part Identifier N/A
Key Points

Eliminating noise "from fuel pump"

C
Number

83-01

May 16, 1983
To eliminate fuel-line noise which appears to come from the fuel pump, the fuel-line check valve has been replaced by a hollow bolt (as of Nov. 1981
production, VIN 81 DA 058 483/85DA 054 028).

Audi 4000 - 4 cyl.

Fuel-line noise, eliminating in earlier cars

In earlier cars, fuel-line noise can be reduced or eliminated by removing the fuel-line check valve and installing a hollow bolt instead.

Audi Coupe and 5 + 5

-

remove check valve and discard

-

install hollow bolt, Part No. N 021 071 2

Eliminating Noise From Fuel Pump|Page 1169 > < All Technical Service Bulletins for Fuel Injector O-Ring:|259005