Re: driver side catalytic converter for my 1999 BMW 740il
I need your help once again! I just had a motor put in my 1999 bmx 740il and when they change the spark plugs they notice oil in the spark plug holes. So they dried them out and then put new spark plugs in it and then I took it for a ride and it drove ruff starting off then it was fine. I drove it 70 75 miles per hour drove really nice came back homewith turned it off started it back up smoked agai.
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