LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 1992 >> Q45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Idle Speed & Ignition Timing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ADJUSTMENTS article in the ENGINE PERFORMANCE Section.

IDLE SPEED (1)

Application Idle RPM
G20 700-800
M30 750-850
Q45 600-700
(1) Transmission in Neutral.
IGNITION TIMING (Degrees BTDC @ RPM) (1)

Application Specification
G20 13-17 @ 700-800
M30 13-17 @ 750-850
Q45 13-17 @ 600-700
(1) Automatic transmission in Neutral.