PCV valve

[73EB]

If you plug PCV valve with a finger should it make the car run differantly? Mine has sucktion but doesn't effect the way it runs. I just know on other cars it can make them die if its plugged. Still trying to figure out why mines running crappy.

[es.biggs]

The FSM says you check it by removing the hose from the valve, and you should hear a hissing sound. When you put your finger on the valve you should feel a strong vacuum suction. It doesn't mention anything about the idle changing...I don't know if that is a good way to test it or not because I don't see how that checks if the valve opens and closes when it needs to.



They are like $5 each from Napa, and if they look old it would be a good idea to change them anyways, just to rule it out and for piece of mind that your new ones won't fail anytime soon

[73EB]

Ok thanks, Does anyone know if they will make the car run poorly if they are bad?

[es.biggs]

They sure can