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      01-25-2013, 07:01 PM   #2
Adam135
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Drives: 2009 135i
Join Date: Oct 2011
Location: USA

Posts: 835
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Isn't it difficult to know if a valve is fully seated? We heard about an engine not running right after a valve cleaning, which was likely caused by foreign matter getting into the cylinder. Seems like it would be really easy to do.
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