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1975-79 Models

Inspect rubber hose connected between cylinder head cover and air cleaner for cracks, damage or restriction about every 15, 000 miles or once a year. If a strong smell of hot oil or increased engine noise is evident, check this system for leaks or possible disconnected hose.

Fig 1: Audi Crankcase Ventilation System
G09312967Courtesy of AUDI OF AMERICA, LLC