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Re: 2004 Ford E350 XLT 5.4L
Posted to Technical Discussion Forum on 3/24/2014 4 Replies

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I've done over 30 of the blown out plugs, am on my 3rd bag of inserts. As for the coils, they fail quite often, in my opinion is due to worn out plugs. I've never seen one fail that didn't have a wor... Login to read more.

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