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Fuel supply, gas operation > < Removing and installing the coolant pipes, engine identification character BWA

Octavia Mk2

Checking the coolant system for leaktightness
Checking the coolant system for leaktightness
Special tools and workshop equipment required
t  Coolant system tester, e.g. -V.A.G 1274-
t  Adapter, e.g. -V.A.G 1274/8-
t  Adapter, e.g. -V.A.G 1274/9-
Test condition
l  Engine must be warm.
Test sequence
  WARNING
Hot steam may escape when the coolant expansion reservoir is opened. Wear safety goggles and safety clothing, in order to avoid eye injuries and scalding. Cover the cap with a cloth and open carefully.
–  Open the cap of the expansion reservoir.
   
–  Position the cooling system testing device -V.A.G 1274- with adapter -V.A.G 1274/8- on the coolant expansion reservoir.
–  Using the hand pump of the testing device generate a pressure of approx. 0.1 MPa (1.0 bar).
If the pressure drops:
–  Search position of the leak and repair fault.
Testing the pressure relief valve in the cap
  S19-0236
–  Position the cooling system testing device -V.A.G 1274- with adapter -V.A.G 1274/9- on the cap.
–  Operate the handpump.
l  The pressure relief valve should open at a pressure of 0.14 ... 0.16 MPa (1.4 ... 1.6 bar).
  S19-0237

Fuel supply, gas operation > < Removing and installing the coolant pipes, engine identification character BWA