The OSV is a PCV valve found on the rear side of the intake manifold. There is an OSV pipe that also runs beneath the intake manifold as well. This osv valve goes bad I read every 60,000 miles. When this goes bad, your X5 4.4 will puff bluish smog out the tailpipes. Another weak flaw of BMW.
A D V E R T I S E M E N T S
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The OSV is a PCV valve found on the rear side of the intake manifold. There is an OSV pipe that also runs beneath the intake manifold as well. This osv valve goes bad I read every 60,000 miles. When this goes bad, your X5 4.4 will puff bluish smog out the tailpipes. Another weak flaw of BMW.
- M M., Oakland, CA, US