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Re: 1999 Ford Expedition 5.4 cylinder #4 misfire code P0304
Posted to Technical Tips Forum on 1/5/2005 2 Replies

Pretty common on 5.4, especially Expeditions, probbaly due to the heater hose concern. The COP on Fords don't like any kind of moisture. I had a 2000 Monday with water in #3 & #4, missed like crazy. We saw evidence that this customer had been four-wheeling, an... Login to read more.

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