Spark Plug Gap

1990 BUICK LESABRE
20,000 MILES • 6 CYL • FWD • AUTOMATIC
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CYBERJAZZ
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  • 1 POST
What is the Correct Gap for a spark plug on a 1990 useing split fire plugs
Aug 21, 2008 at 12:46 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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SQM
  • CAR REPAIR CONTRIBUTOR
  • 6,383 POSTS
Hello,

The spark plug gap should be 0.060 inch for this vehicle.

Any time the plugs get inspected be sure to set the gap and check for any oil fouling or carbon buildup.

Here is a helpful guide on spark plug replacement:

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

I have attached the spark plug inspection chart below.

Please let me know of any questions.
Thank you.
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Oct 24, 2021 at 6:42 PM
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