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-   -   Tips for changing GM 3.8 spark plugs???? (http://www.diychatroom.com/f46/tips-changing-gm-3-8-spark-plugs-199427/)

polarzak 04-16-2014 05:37 AM

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.

DH558 04-16-2014 05:58 AM

Quote:

Originally Posted by polarzak (Post 1337609)
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.

joecaption 04-16-2014 07:52 AM

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.

Windows on Wash 04-16-2014 08:31 AM

No secrets.

Busted knuckles is all.

toolaholic 04-16-2014 05:12 PM

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.

Windows on Wash 04-16-2014 09:12 PM

Try doing it on a 4th gen Camaro V8.

We got so used to doing it that we just drop the motor.

raylo32 04-17-2014 09:25 AM

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.

Quote:

Originally Posted by Windows on Wash (Post 1338103)
Try doing it on a 4th gen Camaro V8.

We got so used to doing it that we just drop the motor.


Oso954 04-17-2014 01:50 PM

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.

Windows on Wash 04-17-2014 02:14 PM

Quote:

Originally Posted by raylo32 (Post 1338284)
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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