Cooling System, Checking For Leaks: Procedure
WARNING: This page is about a different car, the 2012 Volkswagen Touareg and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.
- Engine at operating temperature.
WARNING:
Risk of scalding due to hot steam and hot coolant.
- The coolant system is under pressure when the engine is warm.
- Reduce pressure by covering coolant reservoir cap with a cloth and carefully opening.
-- Open the coolant reservoir cap.
-- Position the Cooling System Tester:VAG1274B with the Cooling System Tester - Adapter:VAG1274/8 on the coolant reservoir.
Fig 1: Identifying Cooling System Tester V.A.G 1274 B With Adapter V.A.G 1274/8 Installed On Coolant Expansion Tank
-- Generate approximately 1 bar (14.5 psi) pressure using the cooling system tester hand pump.
-- If pressure falls, search for leaks and correct problem.