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Old 12-16-2007, 12:45 PM   #57
GWU_Greek
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Join Date: Nov 2007
Location: KY
Posts: 185
My Ride: 325
Raj,

I already ordered the vanos seal repair kit because I used to have this problem ALL winter last year. However, I recently changed my oil seperator and noticed that the cold start issue never came back eventhough the temperature around here are in the lows 20s in the morning.

I am going to replace the vanos seal nevertheless but I have a question. Based on my research I found that a leaking or bad oil seperator (aka crankcase ventilator) will cause sludge to built up. the oil seperator removes moisture from your crankcase. if it is defective then air and moisture will form and propagate the formation of sludge in our m54/m52TU engines. Beside, the sludge problem a bad oil seperator will cause a vacum leak and thus will cause an abnormal start up hesitation.

Is this true?
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