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Old 04-16-2014, 06:37 AM   #1
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Tips for changing GM 3.8 spark plugs????


Anyone have any tips or "secrets" to changing the back three plugs on a Buick Lucerne 3.8? Or is is just a couple of hours of pure frustration, skinned knuckles, swearing, and a lot of booze? It sure looks like that will be the situation. Thanks.

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Old 04-16-2014, 06:58 AM   #2
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Tips for changing GM 3.8 spark plugs????


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Originally Posted by polarzak View Post
Anyone have any tips or "secrets" to changing the back three plugs on a Buick Lucerne 3.8? Or is is just a couple of hours of pure frustration, skinned knuckles, swearing, and a lot of booze? It sure looks like that will be the situation. Thanks.
I believe that you pretty much have it figured out! The Jimmy and Blazers are pretty much the same way from what I was told. Good luck and post your progress.

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Old 04-16-2014, 08:52 AM   #3
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Tips for changing GM 3.8 spark plugs????


The engineers that design these things should be made to do all the basic mantaince items on a vehicle before passing that B/S on to customers.
I've found a universal adaptor helps.
http://www.sears.com/craftsman-unive...p-00904435000P

I also use the shop vac once the plugs out to suck up any trash around the plug hole before installing the new plug.
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Old 04-16-2014, 09:31 AM   #4
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Tips for changing GM 3.8 spark plugs????


No secrets.

Busted knuckles is all.
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Old 04-16-2014, 06:12 PM   #5
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Tips for changing GM 3.8 spark plugs????


Get the thexton engine mover. When I changed plugs in my daughters 3.1 v6 lumina , I removed the dogbones and inserted thexton and cranked engine forward. Google thexton engine mover.

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Old 04-16-2014, 10:12 PM   #6
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Tips for changing GM 3.8 spark plugs????


Try doing it on a 4th gen Camaro V8.

We got so used to doing it that we just drop the motor.
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Old 04-17-2014, 10:25 AM   #7
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Tips for changing GM 3.8 spark plugs????


Indeed, I have on my 1994 LT1! It takes several hours, many busted knuckles, and some serious creativity just to get #2 plug! Some of the others alls you need to do is drop the exhaust. Any way you slice it takes about a good solid day.

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Try doing it on a 4th gen Camaro V8.

We got so used to doing it that we just drop the motor.
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Old 04-17-2014, 02:50 PM   #8
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Tips for changing GM 3.8 spark plugs????


Try spraying some PB Blaster on the threads, and let them soak a bit. That should help.

When you go to reinstall them, put some hi temp anti seize on the threads. Then torque them. A lot of people over tighten spark plugs.

They will come out a lot easier next time.

My vote for the worst car for plug changing goes to the Shelby GT500. You could fight them, but it was easier to pull the engine.
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Old 04-17-2014, 03:14 PM   #9
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Tips for changing GM 3.8 spark plugs????


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Indeed, I have on my 1994 LT1! It takes several hours, many busted knuckles, and some serious creativity just to get #2 plug! Some of the others alls you need to do is drop the exhaust. Any way you slice it takes about a good solid day.
I had a 4 cat 1996. They were the worst of the LT1 era cars but I feel you pain my man.

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