SEAT Workshop Service and Repair Manuals > Leon Mk1 > Power unit | 4 cylinder Injected engine (engine 1.8 l and 2.0 l, timing chain) | Engine cooling

Check pressure relief valve in cap.

–	Screw cap into adapter for cooling system tester -V.A.G 1274/9-.

–	Place the connecting piece -V.A.G 1274 B/1- on the adapter -V.A.G 1274/9-.

–	Connect the connecting piece -V.A.G 1274 B/1- together with the connecting hose of the device to the cooling system tester -V.A.G 1274 B-

–	Operate hand vacuum pump.

l	The pressure release valve should open at a pressure of 1.4 - 1.6 bar.

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