A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000)
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Radiator Cap: Testing and Inspection
CHECKING PRESSURE RELIEF VALVE IN CAP
1. Screw cap onto cooling system tester tools No. VW 1274 using adapter 1274/1, or equivalents.
2. Operate hand pump to build pressure.
3. Pressure relief valve must open at 1.2-1.5 bar (17-22 psi).