Idle Speed & Ignition Timing

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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.

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

IDLE SPEED SPECIFICATIONS

Application	Idle RPM
SC300 With Auto. Trans.	600-700
All Others	650-750

IGNITION TIMING SPECIFICATIONS

Application

⁽¹⁾ Base Timing

⁽²⁾ Controlled Timing

ES300

10 @ 650-750

10-20 @ 650-750

GS300

10 @ 650-750

8-12 @ 650-750

LS400

8-12 @ 650-750

⁽³⁾*

SC300

Auto. Trans.

10 @ 600-700

9-11 @ 600-700

Man. Trans.

10 @ 650-750

9-11 @ 650-750

SC400

8-12 @ 650-750

⁽³⁾*

⁽¹⁾	Jumper wire connected between terminals TE1 and E1 of DLC.

⁽²⁾	Jumper wire disconnected from DLC.

⁽³⁾	Information is not available from manufacturer.