Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

1992 Buick Roadmaster BaseFACTORY OEM SERVICE PROCEDURE

Ignition Timing

NOTE: For timing procedures, see ADJUSTMENTS - V8 article in this section.

IGNITION TIMING

Application

M/T

A/T

4.9L

N/A

10 @ 800

5.0L

VIN E

0 @ 600

VIN F

6 @ 600

5.7L

VIN P

⁽¹⁾

VIN 7

N/A

0 @ ⁽²⁾

VIN 8

6 @ 600

⁽¹⁾	Not adjustable.

⁽²⁾	A/T in Drive.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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