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.

1990 Volvo 760 GLE, AW71LFACTORY OEM SERVICE PROCEDURE

Spark Plug Specifications

SPARK PLUG SPECIFICATIONS

Application	Gap: In. (mm)	Torque: Ft. Lbs. (N.m)
240 DL/GL	.028-.032 (.70-.80)	15-22 (20-30)
740 GL	.024-.028 (.60-.70)	15-22 (20-30)
740 GLE	.024-.028 (.60-.70)	15-22 (20-30)
740 Turbo	.024-.028 (.60-.70)	15-22 (20-30)
760 Turbo, 760 GLE	.024-.028 (.60-.70)	8-11 (10-14)

Factory Service Tools

Use the Manual With the Right Hardware

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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.