Shouldn't I have a PVC valve?

[Rhadley]

1984 120HP. I noticed that the rubber tube going from the spark arrestor to the valve cover has a metal tube that attaches at the cover and looks like a PVC valve, but is just an empty tube. Shouldn't that be a PVC valve? What affects will not having the valve cause?

 

[spartanpele]

Re: Shouldn't I have a PVC valve?

I think you mean pcv, not pvc. PVC is the acronym for a type of plastic, typically piping. PCV is a part of the valve cover to valve cover, or valve cover to carb breather system and pollution control system.<br /><br />Sorry, but I just had to say it as its Friday and I'm extremely bored.<br /><br />To answer your question...yeah, you probably should have one. What make, model, year, etc?

 

[lilmandavis]

Re: Shouldn't I have a PVC valve?

most marine engines dont have a pcv valve. they have what looks like one but, its empty inside. its just for evacuating the fumes from blowby out of the block. wait for the professionals though..

 

[bluemist]

Re: Shouldn't I have a PVC valve?

NO. The breathers on a boat vent naturally via crank case pressure. a PCV is plumbed into the vacuum system and lierally sucks from the crank case a reburns the fumes. if you put a valve in there the case wont vent properly. All is well leave it alone.<br />AL

 

[tim-osborn@sbcglobal.net]

Re: Shouldn't I have a PVC valve?

oops bluemist responed before i submitted this, same info.<br /><br />A pcv valve is a spring loaded valve, vacum operated, to purge the crankcase of blow by gases (on an automotive application) On your particular setup there are no vacum provisions to hook up a pcv valve so the vent hose is routed right to the flame arrestor to aide in removing blow by gases.

 

[spartanpele]

Re: Shouldn't I have a PVC valve?

My bad...I was thinking auto, not marine...

 

[Rhadley]

Re: Shouldn't I have a PVC valve?

Thanks.