Ignition Timing
Check or adjust ignition timing with engine at normal operating temperature, idle speed set to specifications and distributor vacuum lines connected. See Fig 1.
IGNITION TIMING SPECIFICATIONS
| Application | Timing | |
|---|---|---|
| 1974 Models | 5°ATDC@800 RPM | |
| 1975-78 Models | TDC@800 RPM | |
| 1979 Models | ||
| 450 Series | TDC@750 RPM | |
| 6.9 Models | TDC@600 RPM | |