Chain Length, Checking

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Procedure

-- Remove the engine support. Refer to ENGINE SUPPORT, REMOVING AND INSTALLING .

-- Remove the plug -arrow-.

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-- Turn the vibration damper in direction of engine rotation until the chain tensioner piston is extended the maximum distance in the -direction of the arrow-.

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-- Count the visible piston teeth.

TIP:

The visible teeth are all of the teeth that are located to the right of the chain tensioner housing -upper arrow-.

If six or fewer teeth are visible, the timing chain must not be replaced.
If six or fewer teeth are visible and there is an entry in the DTC memory: adjust the chain length using the Vehicle Diagnostic Tester, 0001 - Chain Length Adaptation Diagnosis and delete the DTC memory.
If seven or more teeth are visible: replace the camshaft timing chain.

-- Install the engine support. Refer to ENGINE SUPPORT, REMOVING AND INSTALLING .