PCV Valve

[99Camaro99]

What's this?

[BattyV6]

Positive Crankcase Ventilation Valve

-Andrew

[pvtschultz]

It maintains a vacuum in the crankcase to help seal the rings and reduce blow-by. Then the oil vapor and other blow by gasses are routed back into the engine to be consumed.

[99Camaro99]

why would this need to be replaced? What happens if you don't? I don't ever plan on changing mine unless I start having engine problems.

[RiceyRS]

It's only a $7 part and takes about 2 minutes to change. Mine got stuck closed last year and after a night of hard driving oil was leaking out throught my throttle body, it made quite a mess. So I'd recommend changing it at about 50,000 miles.

[HPbyChevy]

Good example RS. (to bad it happened)

99, it's the easiest thing to replace (next to your old lady) under the hood. Besides, it's part of properly maintaining your ride.

[99Camaro99]

<blockquote>quote:</font><hr>Originally posted by HPbyChevy:
Good example RS. (to bad it happened)

99, it's the easiest thing to replace (next to your old lady) under the hood. Besides, it's part of properly maintaining your ride.<hr></blockquote>

ok how and where do you get it? BTW, I have 54K on my car

[wazup158]

Well you go to an autozone or advance auto parts or pepboys...whichever..tell them your car year and engine size and let them get the pcv valve for you..Its quite simple i changed mine about one week ago and it took about 2 min..It was recommended to me because i lost gas mileage and the pcv valve needs be changed about 35-40000 miles

[chas]

you want to replace it to keep the crankcase from building up positive pressure (from the blow-by gases). if its not working you can get leaks from the valve covers and intake manifold as the pressure finds another way out.