I bought the car like that already. I replaced the wires already and replaced the plugs too but i used platinum ones. iknow you are not supposed to so i am gonna change them out on monday with dealer parts. I hope that would make a fiiference. It has ben bugging me since I bought the car.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual