Sorry about that.. The PCV valve is located under thehood, center upper engine area, top of engine, mounted in passenger side valve cover. To check out your PCV (positive crankcase ventilation) system, perform following procedures..
If any step here leads you to an additional step not posted just let me know and I will get those to you as well..
As for the tube not connected, where is the top end connected? Was this noticed when replacing engine? Perhaps it was forgotten about when replacing the engine or it may just be a drain tube for ventilation tube for some component. Without a picture or more detailed location I am really unsure about it..
To check for vacuum leaks, spray something such as carb ceaner on all vacuum hoses and listen for the RPM's to change. If the RPM changes then you know there is a leak in that spot. Do this to all hoses and visually inspect them for damage/kinks..
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Friday, March 6th, 2009 AT 7:10 PM