oil leak and poor gas milage
A bad PCV valve can cause the engine to smoke. The valve is easy to change in most engines to correct the problem.
Bad PCV valve.
yes. if the valve is plugged or stuck closed, oil can be sucked into the intake through the pcv breather.
Yes it will.
yes
No
Stuck or bad PCV valve on the Valve Cover to the carb or throttle body. The other is the EGR valve. Most likely the PCV.
A bad PCV valve or a problem in the PCV system will cause this
What kind of valve? Exhaust valve? EGR valve? PCV valve?
Check your motor mounts and what your at it check trans mounts.
Generally speaking the symptom of a bad PCV valve is a buildup of pressure inside the crankcase. If it is bad enough it can cause the engine oil to come out through the dip stick tube. If you pull the dipstick out and hear a release of pressure that is probably an indication of a bad PCV valve. The common way to check the PCV valve is to take it out and shake it. If it has a rattle then it is supposed to be good, no rattle it is assumed to be plugged up and no longer working. I am not certain if that is still a valid check.
A bad PCV can cause the engine to be pressurized internally, thus forcing oil out of important seals. This can cause a white/blue smoke from your tailpipe when the oil is then burned. A clogged PCV will also cause the engine to loop while idling, and possibly hesitate under acceleration.