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2002 BMW 525i rought idol at start up

Tiny
DEEPDIVER
  • MEMBER
  • 2002 BMW 525I
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 98,000 MILES
It has a rough idol at start up and stalls untill it warms up. Check engine comes on codes say misfire cilinder 4, gave it a tune up still does it, it has a misterious coolant leak that cant be found I wonder if it has something to do with it
Wednesday, February 17th, 2010 AT 9:56 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Pressure test the cooling system with the plugs out overnight. If the coolant is going in the cylinders, you will see it when you crank it over, it'll fly out of the spark plug holes.
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Thursday, February 18th, 2010 AT 12:18 AM

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