What is my spark plug telling me? Cylinder 1 misfire code, mildly rough idle and uses fair amount of oil. '03 Civic 200,000 miles. : r/Cartalk

What is my spark plug telling me? Cylinder 1 misfire code, mildly

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Multiple cylinders misfire - Honda Civic Forum

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Cylinder 8 misfire : r/DodgeRam

Unavoidable'' misfires