1994 BMW 318 Oily Spark plug threads, very rough idle

1994 BMW 318
15,600 MILES • 4 CYL • 2WD • MANUAL
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S4HINDS
  • MEMBER
  • 1 POST
the two spark plugs closest to the front of car have oily threads and car idles very rough, but runs very well. What all do i have to do to fix the rough idle and oily threads?
Feb 25, 2010 at 7:46 AM
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DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
The crankcase vent valve is suspect in the rough idle.
Feb 26, 2010 at 12:39 AM
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