Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. See IGNITION TIMING table. For adjustment procedures, see ADJUSTMENTS article.

IGNITION TIMING (Degrees BTDC @ RPM)

Application

⁽¹⁾ Basic

⁽²⁾⁽³⁾ Actual

3.0L

3-7 @ 600-800

15 @ 600-800

3.5L

3-7 @ 600-800

15 @ 600-800

⁽¹⁾	With ignition timing adjustment connector grounded or vacuum hose (farthest from distributor) disconnected.

⁽²⁾	With ignition timing adjustment connector ungrounded or vacuum hose (farthest from distributor) connected. Ignition timing may fluctuate.

⁽³⁾	If vehicle altitude is more than 2300 ft. above sea level, actual timing may be advanced.