Exhaust System, Checking For Leaks

WARNING: This page is about a different car, the 2012 Volkswagen Touareg and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

When doing any repair work, especially in the engine compartment, pay attention to the following due to clearance issues:

Route lines of all types (for example for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
Ensure sufficient clearance to all moving or hot components.

NOTE:

After exhaust system repairs, make sure exhaust system is not under stress and that it has sufficient clearance from the bodywork. If necessary, loosen double clamps and clamp and align exhaust pipe so that sufficient clearance is maintained to the bodywork and support rings carry uniform loads.

Replace the self-locking nuts.

-- Start the engine and let it run at idle.

-- Seal the tail pipes with cloths or plugs during the leakage test.

-- Check for leaks where the exhaust manifold attaches to the cylinder head and where the turbocharger attaches to the exhaust manifold.

-- Repair detected leaks.