Quote:
Originally Posted by SlowX6M
I just changed the spark plugs, coils, and CCV upper tubes, and coincidentally these errors started popping up right after.
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hmmm... I know it's a blow to one's ego, but if you're getting errors right after you've done some work, you've got to go back over that work and double/triple check it. It happens to the best of us.
Quote:
Originally Posted by SlowX6M
I used NGK plugs from FCP Euro and Dinan coils. No misfires, so I am confident I did the install right. Used genuine BMW CCV tubes, installed them properly.
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No misfires doesn't necessarily mean complete combustion. Even the best manufacturers can let a small number of bad parts through. In the industry we call this DPPM, or Defective Parts Per Million. The goal is to reduce this, but that also means some bad parts will eventually slip through.
Quote:
Originally Posted by SlowX6M
This really seems to be some kinda vacuum leak somewhere.
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I don't disagree.
All this to say, I'd double check that work. Look at the spark plugs and see if you find any anomalies. I'm not a good spark plug reader by any means, but there are plenty of pictures online which detail how certain conditions will affect the appearance of a plug.
At that point you should be able to narrow in where the issue is. I could certainly be a leak in the manifold.
When does this occur? Is it right away, only when cold, only when warm, etc?