Thread: Spark Plug replacement
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      11-27-2012, 03:08 PM   #4
benzy89
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Drives: '08 E90 335i
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If you're not getting any misfire fault codes, keep the plugs in. Honestly, wait until you start getting misfire codes to switch anything (plugs & ignition coils). BUT when you do replace, I recommend just replacing all 6 together
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