M156 PCV
01-04-2023, 10:03 PM
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E63
M156 PCV
Should my 2007 E63 have vacuum on the crankcase at idle? Mine is hard to get the filler cap off when running. I installed a new Mercedes PCV vent valve. I wouldn’t expect that much vacuum. Car runs good no check engine light but I suspect intake leak internal. Can anyone variety that is normal? Thanks!
