How to Remove the Spark Plugs on a Buick GL8?
2 Answers
Method for removing spark plugs on a Buick GL8: 1. Use a screwdriver to take off the engine cover, and clean the dust and oil stains on the high-voltage wire terminals; 2. Use a socket to unscrew the fixing screws of the high-voltage wire terminals, and remove the high-voltage wire terminals; 3. Use a socket to loosen the spark plugs, then insert the soft tube on the high-voltage wire terminals into the combustion chamber, and pull out the spark plugs to remove them. Taking the 2020 Buick GL8 as an example, its body dimensions are 5219mm in length, 1878mm in width, and 1805mm in height, with a wheelbase of 3088mm and a fuel tank capacity of 71 liters. The front suspension of this car is a MacPherson independent suspension, and the rear suspension is a multi-link independent suspension.
As a DIY car repair enthusiast with years of experience, I frequently remove the spark plugs from my Buick GL8. The first step is to ensure the engine is completely cooled down—wait at least an hour after stopping the engine to avoid burns or damaging the threads. Then, disconnect the negative battery terminal to prevent high-voltage electric shocks—I've seen beginners forget this and get shocked. Next, locate the ignition coils. On the GL8, the spark plugs are on top of the engine, and the coils are usually secured with screws or clips. Remove them gently without yanking the cables forcefully. Use a dedicated spark plug wrench, typically 16mm in size, along with an extension bar for easier operation. Slowly turn the spark plugs counterclockwise to loosen them—don't rush to avoid debris falling into the cylinder bore and causing issues. For tools, I recommend having a vacuum cleaner handy to clean up surrounding dust. The entire process takes about 15 minutes. After completion, inspect the spark plug holes for cleanliness before considering replacement.
