Charge Air System, Checking For Leaks: Procedure

WARNING: This page is about a different car, the 2017 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

-- Loosen the hose clamps -1 and 2- and remove the air duct pipe -3-.

Fig 1: Identifying Connecting Pipe And Clamps

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the :VAG1687/10 with the :VAG1687/13-2 to the turbocharger.

Fig 2: Identifying Turbo System Tester Kit

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-- Connect the hose -1- for the :VAG1687 to the adapter.

Prepare the :VAG1687 as follows:

Fig 3: Connecting Pressurized Air Hose To Testing Unit For Turbo Charger V.A.G 1687

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Pull the pressure regulating valve -2- upward and remove completely, close the valves -3 and 4-.

-- Connect the :VAG1687 to compressed air -1- with a commercially available adapter piece.

NOTE:

If there is water in the viewing glass, it must be drained through the drain plug -6-.

Pressure must not exceed 0.5 bar (7.2 psi)!

-- Open the valve -3-.

-- Set the pressure to 0.5 bar (7.2 psi) using the pressure control valve -2-.

-- Open the valve -4- and wait until the test circuit is filled. Regulate the pressure to 0.5 bar (7.2 psi) again if necessary.

-- Listen, feel and use commercially available leak detection spray or the :VAG1842 to check the charge air system for leaks.

NOTE:

A small quantity of air dissipates via the valves in the engine. For this reason a pressure retention test is not possible.

Information on the :VAG1842S . Refer to the Operating Instructions.

Release the pressure in the test circuit by pulling off the hose coupling before removing the adapter.