Cooling System, Checking For Coolant Leaks: Notes
WARNING: This page is about a different car, the 2010 Volkswagen Jetta and 2009 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
Special tools and workshop equipment required
- Cooling System Tester V.A.G 1274 B
- Adapter V.A.G 1274/8
- Adapter V.A.G 1274/9
Test Conditions
- Engine is at operating temperature
Test Sequence
CAUTION:
Risk of scalding due to hot steam and hot coolant:
- When the engine is warm the coolant system is under pressure.
- Wear protective goggles and protective clothing to prevent damage to eyes and scalding.
- Reduce pressure by covering the coolant expansion tank cap with a cloth and carefully opening.
-- Open the cap on the coolant expansion tank.
-- Install the adapter V.A.G 1274/8 onto the coolant expansion tank.
-- Clamp the connecting piece V.A.G 1274 B/1 to the adapter V.A.G 1274/8.
-- Connect the connector piece V.A.G 1274 B/1 to the cooling system tester V.A.G 1274 B using the connecting hose.
-- Generate approximately 1 bar pressure using the cooling system tester V.A.G 1274 B.
CAUTION:
Risk of scalding due to hot steam and hot coolant:
- Reduce the pressure before disconnecting the cooling system tester V.A.G 1274 B from the connecting hose or connector piece V.A.G 1274 B/1.
- To do this, press the pressure release valve on the cooling system tester V.A.G 1274 B until the pressure gauge displays >>0<<.
If the pressure drops:
-- Look for leaks and correct.