TSB : Vacuum Advance Test
Engine Performance
Details
Connect timing light to engine. Start and run engine at idle. Verify idle speed and base timing are set to specification. Disconnect and plug vacuum hoses at distributor advance and retard diaphragms (if equipped). Increase engine speed to 2500 RPM. Check ignition timing. Connect vacuum hose and verify that ignition timing advances.
Check if this TSB affects your Audi 4000 CS quattro — track your car in Ordo for instant TSB alerts on your exact VIN.
Track My Car Free →