Below is the picture I took while changing the spark plugs. Somebody told me that there should be a second grounding wire (left side of the pic) on another plug. Is it true? will that affect performance?
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Grounding wire on a spark plug
Below is the picture I took while changing the spark plugs. Somebody told me that there should be a second grounding wire (left side of the pic) on another plug. Is it true? will that affect performance?
1994 520i with M50 engine, manual transmission and air conditioner.
VIN: GG45422
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