Timing Chain, Checking: Procedure

WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove the noise insulation. Refer to NOISE INSULATION .

-- Remove the right front wheel housing liner. Refer to WHEEL HOUSING LINER .

-- Remove the bolts -arrows-.

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-- Remove the air duct pipe by lifting the clip -2- and opening the screw-type clamp -3-.

-- Remove the plug -arrow-. The plugs must be replaced.

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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 -arrow-.

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-- Count the visible piston splines.

NOTE:

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

If six or fewer threads are visible: adjust the chain length by selecting 01 - Chain Length Adaptation Diagnosis in Guided Functions on the vehicle diagnostic tester. Then erase the DTC memory.
If seven or more threads are visible: replace the camshaft timing chain. Refer to CAMSHAFT, REMOVING AND INSTALLING .