Spark Plug Gap

Tiny
CYBERJAZZ
  • MEMBER
  • 1990 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 20,000 MILES
What is the Correct Gap for a spark plug on a 1990 useing split fire plugs
Thursday, August 21st, 2008 AT 12:46 AM

1 Reply

Tiny
SQM
  • MECHANIC
  • 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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Sunday, October 24th, 2021 AT 6:42 PM

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