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Home >> Infiniti >> 1995 >> Q45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing 4.5L >> Idle Speed & Ignition Timing
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Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. For adjustment procedures, ADJUSTMENTS article.

IDLE SPEED & CO LEVEL

Application (1) Idle RPM CO Level
Q45 600-700 0.2-8.0%
(1) With transmission in Neutral and no electrical load on engine.
IGNITION TIMING (Degrees BTDC @ RPM)

Application Specification
Q45 (1) 13-17 @ 600-700
(1) Automatic transmission in Neutral and no electrical load.