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How to remove the back spark plug which is stuck and will not come out.

(2006 Cadillac DTS)
in Port Lavaca, TX on April 03, 2013
The threads might be stripped. What are solutions to this problem? The other spark plugs came out just fine.
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Popular Answer
on April 03, 2013
you will have to excorsize little patience,and spray some WD-40 on threading. you will have to wait for it work its magic(a couple of hours). spray it on threading and take in a movie or something. now it still will not come out easy but it will come out.
remember to coat threading on replacements with never seize prior to install. good luck.
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