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.
Engine Ignition Specifications - 3.0L
1 Refer to Vehicle Emission Control Information (VECI) decal for spark plug and gap specifications. If a spark plug is removed for examination, it must be reinstalled in the same cylinder. Cylinders 1, 2, and 3 use a "PG" suffix. Cylinders 4, 5 and 6 use a "P" suffix. If a spark plug needs to be replaced, use only spark plugs with the part number suffix letter "PP" as shown on the engine decal.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.