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2002 Mercury Cougar spark plug stripped
06-16-2015, 02:44 PM
Post: #1
2002 Mercury Cougar spark plug stripped
Recently, the spark plug blew out of my 2002 Mercury Cougar. I was told that this is common with these Ford triton engines. I bought a Fix-A-Thread kit and followed the directions and a you tube video. After, re tapping the hole, the next step was to use a new thread insert with silicone on it and place it on the plug and thread into the newly tapped hole. The next step was to take out the plug and leave the new thread in the hole and then to use a punch to lock in the new insert. However, when I took the plug out, the new insert remained on the plug. Any ideas how to take out the plug, without the insert piggy backing on the plug? I thought about leaving the plug in while the insert with the silicone cures and then taking out the plug.
Thanks in advance.
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06-16-2015, 09:21 PM
Post: #2
RE: 2002 Mercury Cougar spark plug stripped
Certainly NOT silicone but maybe loc-tite on the outside threads with a dab of anti-sieze on the plug itself, then let it sit over night till that dries and then you might be able to take out the plug while the insert stays behind.

BTW, if all else fails use a new plug and just leave everything in there. The new plug will last 50 - 100k miles and the the rest of the car probably will not go that long. I mean, how long will you keep a car that's already 13 years old?
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06-16-2015, 10:40 PM (This post was last modified: 06-16-2015 10:42 PM by army1216.)
Post: #3
RE: 2002 Mercury Cougar spark plug stripped
(06-16-2015 09:21 PM)Rupe Wrote:  Certainly NOT silicone but maybe loc-tite on the outside threads with a dab of anti-sieze on the plug itself, then let it sit over night till that dries and then you might be able to take out the plug while the insert stays behind.

BTW, if all else fails use a new plug and just leave everything in there. The new plug will last 50 - 100k miles and the the rest of the car probably will not go that long. I mean, how long will you keep a car that's already 13 years old?

Thanks. Loc[tite was going to be my next step. I don't plan on keeping the car that long and as long as the plug stays in, I will be happy. I would even consider welding it in. Thanks again.
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06-16-2015, 10:59 PM
Post: #4
RE: 2002 Mercury Cougar spark plug stripped
Don't bother with welding, just copper coat (or similar) on the plug and loc-tite on the insert... tighten away with a new plug!

If the next owner needs to fool with it he can do the same thing.
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