Quote:
Originally Posted by 1er_vert
The bad CCV part is known as "Filtered Air Duct." It actually has an internal, spring-loaded plunger check valve coming directly from the air/oil separator, which draws oil vapor to be burned by the plenum. Constant blue smoke is likely the valve stem seals, and/or the piston rings.
Carbon fouling of the CCV is the leading cause of clogging. As the saying goes, "A redline a day.... keeps the carbon away." The Italian Tune Up really is what these cars are designed for(Autobahn Grand Touring) drive conditions.
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Thanks for the info.
I'm chasing smoke issues on my truck. Constant blue smoke is probably the piston rings and at cold start is valve stem seals. My truck smokes only after long idle, none at cold start nor constant - I have replaced both intake ducts and oil separators, and installed catch cans but it still smokes after a 30 second idle.
Any thoughts on what it might be?