I have noticed that since I installed my cusco oil catch can, I am getting a leak from my valve cover. I found a small brass lined hole in the back of the valve cover just under the PCV and it seems to be the source of the leak..... its not steady its just alittle messy. Anybody else encounter this problem?

 

I got the same leak....but no catch can....i have learned to live with it...

 

same here. I just clean it off once in a while. doesn't concern me.

 

Your PCV system still fully functional with the catch can?

 

ya that hole also leaks on mine, what the heck is this hole. I heard people say if oil is coming out of it that the valve gaskets are leaking. Anyone know for a fact what the heck this hole is for?

 

bump

 

same question...i have a little leak from back there and am pretty sure it's comin from that little hole under the pcv and also if you take off your MITSUBISHI spark plug cover, there is an identical hole right by the 1st plug....what the fudge are those 2 holes for???!!!

 

now im determined to findout what this "hole" is for. there are several other threads about this same leak.

 

That little hole goes through the valve cover to just under the spark plug cover. It drains any liquid that happens to get under there. If you pull the spark plug cover off you will see the other end of the hole.

-Paul

 

ya but how does oil get in there in the first place?

 

For that small hole, it would be if you spill some when you are filling your oil. There isn't really any other way for oil to get in there. You could also get water in there when it rains and it would drain out that hole.

-Paul

 

huh???!!!! im not talking about oil or water coming into that hole, im talking about oil leaving out of that hole.

 

It's a straight through tube. You have to put something in one end to get it back out the other. If you pull the spark plug cover off you'll see the opening at the other end. It goes in that end and out the end you're talking about.

 

It's probably time to change your plug gaskets and your valve cover gasket.

 

Same leak here. It leaks quite a bit for me. This was after a 10 min drive. Any known solutions?