Tune-Up - 4-CYL: Adjustments: Distributor
All models except 1.6L (VIN 4) are equipped with the Delco-Remy High Energy Ignition system with Electronic Spark Timing (HEI-EST). The HEI-EST distributor is not equipped with centrifugal or vacuum advance mechanisms since all advance is controlled by the Electronic Control Module (ECM).
1.6L (VIN 4) model is equipped with an electronic ignition system. On these models distributors are equipped with centrifugal and vacuum advance.