Description - Platinum Plugs

The V6 engines use platinum resistor spark plugs. They have resistance values of 6,000 to 20,000 ohms when checked with at least a 1000 volt tester. For spark plug identification and specifications, Refer to SPECIFICATIONS .

Do not use an ohmmeter to check the resistance of the spark plugs. This will give an inaccurate reading.

When the spark plugs use a single or double platinum tips and they have a recommended service life of 100,000 miles for normal driving conditions per schedule A in the service information. The spark plugs have a recommended service life of 75,000 miles for severe driving conditions per schedule B in the service information. A thin platinum pad is welded to both or just the center electrode end(s) as shown in Fig 1. Extreme care must be used to prevent spark plug cross threading, mis-gapping and ceramic insulator damage during plug removal and installation. See Fig 2.

Fig 1: Platinum Pads

Courtesy of DAIMLERCHRYSLER CORP.

1 - APPLY ANTI-SEIZE COMPOUND HERE ONLY

2 - PLATINUM SPARK SURFACE

CAUTION: Cleaning of the platinum plug may damage the platinum tip.

Fig 2: Setting Spark Plug Electrode Gap

Courtesy of DAIMLERCHRYSLER CORP.

1 - TAPER GAUGE