LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 1993 >> Trans Sport V6-191 3.1L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Timing >> Adjustments
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Ignition Timing: Adjustments

NOTE: Timing specifications are listed on the Vehicle Emissions Control Information label under the hood. Always follow the Vehicle Emissions Control Information label procedures first before using the following procedure.

Typical Timing Mark:





PROCEDURE
Timing must be checked under the following conditions:
- Normal operating temperature.
- Air cleaner installed.
- A/C "OFF".
- Transmission in Neutral or Park.

Timing Check:
- Ground the SET TIMING connector, a single tan wire with a black stripe that breaks out from the engine harness located adjacent to the RH shock tower. DO NOT disconnect 4 wire connector at distributor.
- Connect timing light and adjust as necessary to 10° (BTDC) by loosening hold down bolt and rotating distributor.
- Tighten hold down to 34 Nm (25 lb ft) and recheck the timing.
- Stop the engine and remove ground from SET TIMING connector.