All Other Models Electronic Ignition

Warm engine to normal operating temperature. Turn engine off. Connect tachometer and timing light, following manufacturer's instructions.

Fig 1: Ignition Timing Mark Locations (All Models)
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Disconnect both plugs at idle stabilizer unit (squeeze connector to loosen). Connect plugs together. Check idle speed, then adjust timing by turning distributor.