I'm still having some idle issues from time to time when I stop and put the gearbox in N or P. The engine starts to dance between 6-900 rpm, if I give it a little gas then it gets back to the normal idle.
Last time it was a crack in the PCV system. After I repaired that, this symptom got much better. Now it's only doing it rarely. So I think there is a leak somewhere still.

I found a youtube video about building a homemade smoke machine to find the leak. You need a jar a soldering iron, some cloth and baby oil.
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Then I hooked up it to the PCV system and found a leak. Is it normal that the smoke comes out on the bottom of the PCV valve? I'm guessing it's not.
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