LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Porsche >> 1991 >> 911 Turbo >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Idle Speed & Ignition Timing
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. Idle speed and ignition timing are controlled by DME engine management system and are not adjustable. Values given in IGNITION TIMING SPECIFICATIONS  and IDLE SPEED SPECIFICATIONS  are for verification purpose only.

IGNITION TIMING SPECIFICATIONS

Application Degrees @ RPM
911 Carrera 2/4 TDC +/- 3 @ 840-920
IDLE SPEED SPECIFICATIONS

Application Idle RPM
911 Carrera 2/4 840-920