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VW 16V Cylinder Head Ticking Noise at 2,000 RPM
Dimensional differences between the camshaft sprockets and the cam timing chain create a rattling noise that can be heard from the cylinder head at approximately 2,000 rpm.
This bulletin refers to all MY Volkswagen 16-valve engines.
As of 11/88, starting with VIN 067 722 a manufacturing tolerance
change has been made to the camshaft sprockets. If a customer complains
because of persistent noise, replace both camshafts.
Intake camshaft: 027 109 021 AJ
Exhaust camshaft: 027 109 022 F
Some or all of this information was provided by the Automotive
Parts Remanufacturers Association (APRA). For more information on
technical bulletins available through APRA call 703-968-2772 or visit www.AutoBulletins.com.