Thread: 5.4l 3v Spark Plug Removal Instructions
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Old 02-02-2015, 07:59 AM
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Re: 5.4l 3v Spark Plug Removal Instructions
Good info about the boot color. I've also heard a lot of people are running SeaFoam thru the intake to try and get rid of carbon buildup in the combustion chamber side before doing the plugs as well.
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