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Originally Posted by Bdc101
Nick, thanks for typing this up! I have a few questions:
-Do you know if there is only one specific part number for the valve cover from the M56 SULEV engines, and if so what is it? Or are there multiple part numbers?
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One, so far as I know.
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-How did you source it? New, used, junkyard, ebay etc
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Used - eBay. They actually were sold around here, but they're pretty rare in the yards. Probably worsened by the expense of repairing certain SULEV components like the sealed fuel tank / pump assembly. Net-net, it's not really worth my time to cruise the yards anyway.
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-Do you know how you go about rebuilding the PCV and how you determine that it needs to be rebuilt?
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You buy a new cap and diaphragm from the Ukrainians on eBay and it arrives... Eventually. As far as testing goes, you unbolt the chamber cover off the bottom and clean things out as thoroughly as possible with a good degreaser - Spray Nine Grez Off or Castrol Superclean are pretty good. Do NOT remove the cap without a replacement on hand as it will break. After cleaning, I threw an inspection camera into the pcv chamber and didn't see any holes, so I left it. Once you've cleaned it out, there's no reason to replace the diaphragm unless it's damaged.
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Thanks again! I hope to do this upgrade in the next year or so as well, since I am on year 7 with the replacement cold-weather CCV I put in.
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