Charge Air System, Checking For Leaks: Procedure: Disassembling

WARNING: This page is about a different car, the 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Remove the air duct pipe with connection from the turbocharger. Refer to TURBOCHARGER CONNECTIONS, REMOVING AND INSTALLING .

-- Connect the :VVAG1687/11 with the :VVAG1687/15 to the turbocharger.

-- Connect the :VVAG1687 to the adapter.

Prepare the :VVAG1687 as follows:

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Completely remove the pressure regulating valve -2- and close the valves -3 and 4-.

The knob must be pulled upward so that the pressure regulating valve -2- can be turned.

-- Connect the :VVAG1687 to compressed air -1- with a commercially available intermediate piece.

NOTE:

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

-- Open the valve -3-.

CAUTION:

There is a risk of damage if the pressure is set too high.

The pressure must not exceed 0.5 bar (7.2 psi)!

-- Set the pressure to 0.5 bar (7.2 psi) using the pressure regulating 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.

-- Check the charge air system for leaking areas.

By listening and feeling
With a commercially available leak detection spray
With the :VAG1842S

NOTE:

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

Refer to the service/repair/system information for information on using the Ultrasonic Tester :VAG1842S .

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