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Re: Changing spark plugs on the 4.3
Posted to Technical Discussion Forum on 8/2/2008 2 Replies

Break the old one off with a prybar. Break it fast and hard or you will just bend the electrode & make a mess. Then use a 5/8 or 16MM wobbly to take it out. I put the new one in with a spark plug boot and custom manufactured craftsman wrench.

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