torque AUDI A4 1995 B5 / 1.G AWM Engine Charge Pressure Leak Test Workshop Manual

21-16


Charge pressure leak test with
VAG 1687

Intake system, checking for leaks using
VAG 1687 Diagnostic Tool

Diagnostic trouble codes (DTCs) related to fuel
trim, charge pressure or mass air flow (MAF)
may be caused by:

Leaking (worn/torn) intake hoses during charge
conditions
Incorrectly torqued or improperly placed clamps
on intake hoses etc. causing leaks during
charge conditions

Check the charge air pressure system using the VAG 1687 Charge air
system tester.
Special tool VAG 1687 Charge air system tester preliminary set-up

- Back off pressure regulator knob -2- of VAG 1687 fully to protect gauge
when shop air supply is applied to assembly.
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