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      10-30-2012, 10:42 PM   #10
Volasko's Avatar
Drives: 2006 E90 330i BSM 6MT ZSP
Join Date: Dec 2010
Location: Toronto

Posts: 1,114
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If you have an 06, the valve head bolts are known to break. I only noticed my broken head when I swapped my plugs. To properly see all the head bolts you need to remove the plastic cover, which involves removing the upper plastic section and wires (roughly 1 hour to DIY and install). I got it fixed under warranty but have heard trying to DIY it yourself isn't as straight forward as you would think (if that is worth anything...).
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