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Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. See IDLE SPEED SPECIFICATIONS and IGNITION TIMING SPECIFICATIONS tables. For adjustment procedures, see ADJUSTMENTS article in the ENGINE PERFORMANCE Section.

CAUTION: DO NOT ground check connector terminal IG-. Damage to ignitor and/or ignition coil may result.
NOTE: Ensure tachometer is compatible with this system before use.
IDLE SPEED SPECIFICATIONS

Application RPM
ES300 700
LS400 650
SC300
Auto. Trans. 650
Man. Trans. 700
SC400 700
IGNITION TIMING SPECIFICATIONS

Application Specification
ES300 10 @ 700
LS400 8-12 @ 650
SC300
Auto. Trans. 10 @ 650
Man. Trans. 10 @ 700
SC400 8-12 @ 700