1990-1993 Cadillac DeVille Spark Plug Wires Torque Specs

4.5L V8

Applies to 1990, 1991, 1992, and 1993 Cadillac DeVille

Labor Time:0.8 hours

🔧 Torque Values5 specifications

Component	lb-ft	Nm	Notes
Cover Screws	8	11	—
Engine Cover Clips	2	3	—
Ignition Coil Bolt	8	11	—
Mounting Bolts	20	27	—
⚠️ Spark Plug	15	20	Gap before install

⚠️ = Critical torque value | Always verify with vehicle-specific service manual

⚠️ Some critical specs are estimated. Please verify sequence.

1990-1997 4.6L V8 Modular

2007-2012 3.7L I5

2011-2016 6.7L V8 Power Stroke Diesel

1992-1995 1.5L I4 D15

2016-2023 2.0L Turbo I4

1995-1999 2.0L Turbo I4

The primary torque specification for spark plug wires on a 1990-1993 Cadillac DeVille is 11 Nm (8 lb-ft).

There are 5 torque specifications for spark plug wires on the 1990-1993 Cadillac DeVille 4.5L V8, covering all related fasteners and components.