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.

2007 Jaguar XK8 2D ConvertibleFACTORY OEM SERVICE PROCEDURE

Engine Ignition (4.2L): Specifications

Engine Firing Order

Firing Order
1 : 2 : 7 : 3 : 4 : 5 : 6 : 8

General Specifications

Item	Specification
Spark plug	AJ8 4575
Spark plug gap	0.9 - 1.0 mm

Torque Specifications

Item	Nm	lb-ft	lb-in
Ignition coil - bolt	5	4	44
Spark plug	28	21	-

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.