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Blue smoke from exhaust

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Old 02-15-2013, 11:53 AM
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2007e350
Blue smoke from exhaust

My 2007 E350 sends out a cloud of blue smoke sometimes when started after sitting overnight. Dealer tells me this is normal,is that true
Old 02-15-2013, 12:34 PM
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2004 E320
According to some in other forums this is not normal. The blue smoke indicates that it is getting oil from cylinders after sitting overnight. The problem might be bad valve seal.

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