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.

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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 274 (IGNITION SYSTEM)SPARK PLUG INSPECTIONRESISTANCE INSPECTION

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Resistance Inspection

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Resistance Inspection

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Measure the resistance of the spark plug using a tester as shown in the figure.
- If not within the specification, replace the spark plug.
1. Resistance 3.0-7.5 kilohms [25°C {77 °F}]
  
  Fig 1: Measuring Spark Plug Resistance
  Courtesy of MAZDA MOTORS CORP.

RENDER: 1.0x

NO RELATED

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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.