Question about oil cap/dipstick smoke

born2drv

Banned
Nov 1, 2005
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Burbank, CA
Is it normal for an engine to smoke just slightly with the oil cap removed? I noticed the same thing too with oil dipstick. I think my valve stem seals may be no good... could this be a sign?
 

IJ.

Grumpy Old Man
Mar 30, 2005
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I come from a land down under
Totally unrelated

Most motors have some as all have end gaps in the rings.

How much is normal.... don't really know how to answer that.

I'm sure there will be a specification for that somewhere.