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.
Spark Plug: Description
Cleaning platinum plugs may damage the platinum center electrode or the thin platinum pad.
| 1 - APPLY ANTI-SEIZE COMPOUND HERE ONLY |
| 2 - PLATINUM SPARK SURFACE |
The spark plugs are platinum resistor design. They have resistance values of 3, 500 to 20, 000 ohms when checked with at least a 1000 volt tester. For spark plug identification and specifications. Refer to SPARK PLUGSÂ .
Do not use an ohmmeter to check the resistance of the spark plugs. This will give an inaccurate reading.Â
A thin platinum pad (2) is welded to both or just the center electrode end(s). Extreme care must be used to prevent spark plug cross threading, incorrect gapping and ceramic insulator damage during plug removal and installation.
Mopar® Nickel-Graphite Anti-Seize compound is applied to the thread area (1) to prevent damage to the spark plug during removal and installation.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.