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Old 12-23-2018, 11:33 AM   #4
51 MERC-CT
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Location: East Hartford, Ct
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Default Re: Dirty Oil- PCV Fail?

The PCV system will indeed produce a vacuum in the crankcase.
That is why all vents to the crankcase should be filtered.
It's hard to believe that so much dust could be drawn into the crankcase from the clutch housing in such a short period of running and is there an air path source that should not be there.
Perhaps running without the vacuum will verify it one way or another.
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