93 4.0 spark plugs - JeepForum.com
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post #1 of 2 Old 07-04-2010, 07:27 AM Thread Starter
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93 4.0 spark plugs

What are the best spark plugs to use on a 93 4.0 ?

Thanks Rob

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post #2 of 2 Old 07-04-2010, 08:13 AM
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Just us the stock recommended spark plugs. In this case Champion RC12LYC or equivalant. These motors love them and they are cheap.
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