A bad PCV valve can cause the engine to smoke. The valve is easy to change in most engines to correct the problem.
Yes
One sign could be a lot of smoke out of the exaust
yes it can. This is bcos when its bad, it instead allow oil frm d crankcase to be sucked directly in to the intake manifold, thereby generating white smoke.
Pcv valve needs changing
The PCV valve is located on the top of the valve cover. To test the PCV valve, start the engine, pull the valve out of the valve cover and put your thumb over the hole in the end. If you hear a little click, then the PCV valve is good. If there is no vacuum at the hole, either the valve is bad or the hose is bad. To see if the hose is bad, pull the hose off and put your thumb over the end. If there is vacuum, replace the PCV valve. If not, replace the hose. It's important to note that PCV valves are sized for specific engine applications. The wrong PCV valve for an application can flow too much or too little air causing driveability problems.
put a new PCV valve in if it's bad.
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.
I had this problem for 2 yrs before I found out that the PCV valve grommets were bad and had holes in there. I'm guessing that you are also burning alot of oil fast too. Check the pcv valve rubber fittings. Good luck
I have read that a bad PCV Valve will contribute to gunking up your Throttle Body, which could lead to irregular acceleration issues. I am certain that there is more to a bad PCV Valve than that, as this is an Emission Control item, but hopefully someone who knows more will chime in. SUBMITTED: Friday, 03JUN11
yes. if the valve is plugged or stuck closed, oil can be sucked into the intake through the pcv breather.
White smoke is steam It may be a early indication that the head gasket is failing.
Bad PCV valve.