LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 1991 >> Swift GT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks >> Idle Speed & Ignition Timing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Idle Speed & Ignition Timing

Ensure idle speed and base ignition timing are set to specification. If necessary, see ADJUSTMENTS article in the ENGINE PERFORMANCE Section.

IDLE SPEED SPECIFICATIONS (1)

Application Idle RPM
DOHC
With A/C Off 800-900
With A/C On (2) 850-950
SOHC
With A/C Off
Auto. Transaxle 800-900
Man. Transaxle 700-800
With A/C On
Auto. Transaxle (2) 800-900
Man. Transaxle (2) 850-950
(1) Idle speed specification is with transaxle or transmission in Neutral or Park.
(2) The A/C idle speed is adjusted by rotating adjusting screw on the A/C Vacuum Switching Valve (VSV).
IGNITION TIMING (Degrees BTDC @ RPM)

Application Man. Trans. Auto. Trans.
DOHC (1) 5-7 @ 800-900 (1) 5-7 @ 800-900
SOHC (2) 5-7 @ 600-700 (2) 5-7 @ 700-800
(1) Specification is listed with jumper wire installed between terminals "C" and "D" (Black and Violet/Green wires) of test connector, located near ignition coil.
(2) Specification is listed with vacuum hose disconnected from distributor. With hose connected, timing should be 11-13 degrees BTDC.
scientia non olet · About LEMON Manuals