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Coil Pack & Spark Plugs for the '12 4.6🤦🏾‍♂️😒

Thread author domo962002
Start date Sep 25, 2022

domo962002

New member

Sep 25, 2022

Barely drive my 4.6, only drive it on weekends. Bought it at 86, 000 miles back in October. It now has a little over 96, 800 miles. I take good care of my baby. Got the throttle body & the fuel injectors cleaned out. Installed a K&N filter. Got a RS race chip plugged in to increase HP. My biggest letdown is that I replaced all 8 spark plugs over a month ago(wasn't having any issues) with high grade ruthenium spark plugs. Check engine came on for the first time ever on Friday. The computer says that ignition coil #3, #5 & #7 to be replaced & the most confusing thing of all...is now I need performance spark plugs all of a sudden. I thought ruthenium were performance spark plugs

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