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5.4, 3 valve.. Rough idle

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Old 06-11-2014, 09:48 PM
Milly1219 Milly1219 is offline
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5.4, 3 valve.. Rough idle

My 05 had plug change yesterday, 5 out of 8 broke..still idling very rough. When I first start it when it's cold it runs fine. When it gets to operating temperature is when it idles very rough at 750 rpm. If I give a bit of gas to 1000 rpm it smartens up. Any thoughts, advice ?
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