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Stripped spark plug hole!!!

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Old Aug 21, 2004 | 09:36 AM
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Default Stripped spark plug hole!!!

Well, on Thursday when I was driving home back from work, I heard a loud pop then followed by a huge exhaust leak. During further inspection, I find that one of my spark plugs shot out. It was the number 5 cylinder spark plug(3rd one up from the driver's side) I had to get my car towed since I didn't have any tools or couldn't purchase any spark plugs locally in the area I was in.

This morning, I purchased a replacement spark plug, thinking the spark plug just shot out and nothing was damaged. But, when I tried to thread in the spark plug, I find that the freakin' hole is stripped.

Now, is there any possible way I can install a spark plug in a stripped hole? Or, I'm I screwed royally??????
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Old Aug 21, 2004 | 09:52 AM
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You can get a helicoil kit that is made to fix stripped spark plug holes.

any idea why it blew out on you?
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Old Aug 21, 2004 | 10:26 AM
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Originally Posted by NateLS1
You can get a helicoil kit that is made to fix stripped spark plug holes.

any idea why it blew out on you?
Well, I did install new spark plugs to my car, but that was 4 years ago. But, I have been hearing a small exhaust leak for the last 4 to 5 months. I wasn't sure what it was, but sure it enough, it was the spark plug coming loose slowly. This last week, the exhaust leak was getting progressively worse, but I had no idea what it was till my spark plug went flying out.

Also, are helicoil kits sold in regular auto parts stores?
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Old Aug 21, 2004 | 10:51 AM
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You can get them at Autozone, etc. I found Car Quest had a great selection of different size helicoils. Don't know where u live or what is around you though.
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Old Aug 21, 2004 | 11:29 AM
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I just went to Discount Auto Parts, and I did see the helicoil kits. But, I was bit intimidated by the process because apparently you have to drill through the existing hole to smooth out the hole before you put in the new thread. But, that got me thinking that if I drill through the spark plug hole, wouldn't that cause all that debris to fall inside the engine?
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Old Aug 21, 2004 | 12:13 PM
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You have to take the head off.
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Old Aug 21, 2004 | 01:56 PM
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Originally Posted by Dmoney
You have to take the head off.


you prolly should have also replaced the spark plug since the last time, four years is a while. even if you haven't hit the recommended mileage point for replacement.....thats metal on metal, heat cycles, theres only so much it can take. they aren't like heads or something that are torqued way on there and have a gasket and aren't coming off. although you ARE the first guy i've ever heard of having a spark plug shoot out of his block before. LOL. good luck man.
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Old Aug 21, 2004 | 02:31 PM
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Originally Posted by cyphur_traq


you prolly should have also replaced the spark plug since the last time, four years is a while. even if you haven't hit the recommended mileage point for replacement.....thats metal on metal, heat cycles, theres only so much it can take. they aren't like heads or something that are torqued way on there and have a gasket and aren't coming off. although you ARE the first guy i've ever heard of having a spark plug shoot out of his block before. LOL. good luck man.
Believe it or not, spark plug swap has been on my list of "my things to do" for my car.
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Old Aug 21, 2004 | 02:42 PM
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The head HAS to come off.

Do yourself a favor if you don't feel comfortable with this and take it to a machine shop.

Don't worry about the strength of the hole when the fix is complete. If the thread insert is done properly it will be stronger than when it was new.

good luck
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Old Aug 21, 2004 | 03:33 PM
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Originally Posted by Cheatin' Chad
The head HAS to come off.

Do yourself a favor if you don't feel comfortable with this and take it to a machine shop.

Don't worry about the strength of the hole when the fix is complete. If the thread insert is done properly it will be stronger than when it was new.

good luck

Yeah, I'm definately taking my car to auto shop to get this done. I've never taken the heads of a car before, I'm in no mood to try this. If this car wasn't my daily driver, I might have given it a shot.

Anyways, thanks for the help guys.

One more thing, anybody know what this little project will run roughly?
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Old Aug 21, 2004 | 03:37 PM
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eh, to be honest i'd take the head off myself and carry it to the shop for them to do the work. will save you most of the labor $$$. taking the head off takes what, an hour? thats taking your time, for a first timer, not having taken off coil packs, seeing as how your coil packs come off one at a time. if you take them your head, and they just helicoil it, it will be much cheaper. otherwise, i'd say roughly 150-200 total? w/o helicoil kit, i dunno what they run.
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Old Aug 21, 2004 | 06:11 PM
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I noticed you have a 98. Does you car fall into the lot that had recalls?
http://web.archive.org/web/200110160...egg/98022.html
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Old Aug 21, 2004 | 06:33 PM
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my vote, new heads!!! Good excuse to buy them now.
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Old Aug 21, 2004 | 08:31 PM
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Originally Posted by felton316
I noticed you have a 98. Does you car fall into the lot that had recalls?
http://web.archive.org/web/200110160...egg/98022.html

I'm not sure if my car can fall under this because my build date was either september or october of 1997. That recall only says for like models built in 1998.
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Old Aug 21, 2004 | 08:42 PM
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Originally Posted by rally2247
I'm not sure if my car can fall under this because my build date was either september or october of 1997. That recall only says for like models built in 1998.

Damn, it was worth a try.
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Old Aug 21, 2004 | 08:44 PM
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Originally Posted by Z-286speed
my vote, new heads!!! Good excuse to buy them now.

Don't aftermarket heads cost like $2000?
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Old Aug 21, 2004 | 11:11 PM
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they can anywhere from $1200-$3000+
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Old Aug 22, 2004 | 03:42 AM
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patriot performance has good prices on new ls6 heads..
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Old Aug 22, 2004 | 01:10 PM
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Quick question guy, is it possible to run on 7 cylinders? Since I need to move my car to a auto shop, I really didn't want to call another towing service.
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Old Aug 22, 2004 | 03:34 PM
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Patriot has '98 heads for $995 w/no core.
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