FixVault

1979 Models

Check or adjust ignition timing with engine at normal operating temperature, distributor and EGR vacuum lines disconnected and plugged, and engine at specified RPM.

IGNITION TIMING SPECIFICATIONS (DEGREES BTDC@RPM)

Application Setting
1975
  Carbureted 6@600
  Fuel Injected 12@600
1976
  Seville 10@600
  All Others
    Carbureted 6@600
    Fuel Injected 12@600
1977
  350" V8
    California 8@650
    All Others 10@650
    425" V8 18@1400
1978
  Carbureted 23@1600
  Fuel Injected
    Brougham & DeVille 18@1400
    Eldorado & Seville 10@600
1979
  Seville & Eldorado 10@600
  All Others
    Carbureted (2) 23@1600
    Fuel Injected 18@1400
(1) A production change starting with distributor No. 180291, revises ignition timing from 8°BTDC to 6°BTDC on California Seville models.
(2) On models with Electronic Spark Selection (ESS) system, disconnect and plug fuel economy switch vacuum line.