Correct spark plug gap

2002 CHEVROLET BLAZER
160,000 MILES • 4.3L • 6 CYL • 2WD • AUTOMATIC
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TONYDLP
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I am not sure if my plug gap is to be .045 or .060. My question is,
how do I determine if my VIN Is an (x) or a (w) in order to determine my correct plug gap?
Feb 10, 2019 at 12:46 PM
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ASEMASTER6371
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Good afternoon,

No, both are the same. Below is the spec for you. Please let us know if you need anything else to get the problem fixed.......................................

1.52 mm (0.060 in)

Roy

Feb 10, 2019 at 2:37 PM
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SQM
  • CERTIFIED EXPERT
  • 6,383 POSTS
Hello,

Regardless of the engine code the spark plug gap is 0.060 inch.

Just so you know the eight digit (from the left) of the VIN is the engine code.

https://www.2carpros.com/articles/how-to-change-spark-plugs

I have attached the spark plug replacement steps with the torque specifications below.

Please let me know if you have any questions.
Thank you.
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Jan 22, 2022 at 10:44 AM
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