spark plug removal


Old 02-06-02, 01:41 PM
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spark plug removal

I have a 94 Jeep Grand Cherokee w/V-8 which I've been doing all the necessary tune ups. I recently replaced 7 of 8 spark plugs because I can't seem to get the last one out. So far, I've squirted WD-40 on it, back-threaded about a turn but it doesn't come out more than a turn. The other plugs came out easy and I'm sure I initially installed the 8th one correctly. What more can I do? Your response will be greatly appreciated.

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Old 02-06-02, 02:00 PM
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If it's seized in there, chisel it out or drill into it and try to tap it out or remove it.

If you ruin the threads, you will have to tap new ones for the new plug.

It's likely cross threaded, and that's why it's stuck.

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