Spark Plug Gap

1990 BUICK LESABRE
20,000 MILES • 6 CYL • FWD • AUTOMATIC
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CYBERJAZZ
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What is the Correct Gap for a spark plug on a 1990 useing split fire plugs
Aug 21, 2008 at 12:46 AM
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SQM
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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.
Oct 24, 2021 at 6:42 PM