Volkswagen Golf Quiz
4- cylinder injection engine(1.4 1 direct inction. turbocharger)

Checking cooling system for leaks

In this manual: 4- cylinder injection engine(1.4 1 direct inction. turbocharger)
General body repairs, exterior — 230General body repairs, interior — 279General information, paint — 133Vechile- specific paint information — 27Heating, air conditioning — 156Auxiliary heater — 58Air conditioning system with refrigerant R134a — 1297- speed dual clutch gearbox 0CW — 544- cylinder injection engine(1.4 1 direct inction. turbocharger) — 182Fuel supply system - Petrol engines — 59Running gear, axles, steering — 221Brake system — 92Wheels and Tyres guide — 12Guide for using trailers — 11Wheels and Tyres Guide - General Information — 121Brake system (hybrid) — 73Electrical system — 326Communication — 65Electrical system, general information — 111
~1min read

Special tools and workshop equipment required

Cooling system tester -V.A.G 1274 B-
Checking cooling system for leaks

Adapter for cooling system tester -V.A.G 1274/8-
Checking cooling system for leaks

Adapter for cooling system tester -V.A.G 1274/9-

Procedure
Checking cooling system for leaks
  • Open cap -arrow- on coolant expansion tank.

Engine at operating temperature.

The cooling system is under pressure when the engine is hot. Hot steam/hot coolant can escape - risk of scalding. Risk of scalding to skin and body parts.Wear protective gloves.Wear eye protection.Release pressure by covering cap of coolant expansion tank with a cloth and opening it carefully.
Checking cooling system for leaks
  • Fit cooling system tester -V.A.G 1274 B- with adapter -V.A.G 1274/8- on coolant expansion tank.
  • Using hand pump on tester, build up a pressure of approx. 1.0 bar.
  • If this pressure is not maintained, locate and rectify leaks.
Checking cooling system for leaks

Checking pressure relief valve in filler cap

  • Place cooling system tester -V.A.G 1274 B- with adapter -V.A.G 1274/9- on filler cap.
  • Build up pressure using hand pump of cooling system tester.

The pressure relief valve must open at a pressure of 1.6…1.8 bar.
Checking cooling system for leaks

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