Noisy engine when cold starting, sometimes

[EODguy]

Originally Posted by Masospaghetti

Any common culprits that would cause a noisy cold engine? Sounds like lifters, goes away after a second or two once oil pressure builds. It doesn't always do it, either. I heard there were some o-rings and a check valve that might go bad. Would a bad tensioner also do this?

Dirty filter screens in the vanos are a distinct possibility...

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