Oil through engine breather. Help please! (w. pics) - Maintenance Forum

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Oil through engine breather. Help please! (w. pics)
Saturday, June 12, 2010 7:59 PM
Hey i have this problem ... 2003 Cav.

ok my "pcv hose" broke and i see oil leaking coming from the engine breather....

it gets stuck in the throttlebody's box






1)Can i put an small air filter right in the breather?

2)Why there is oil coming out from it?

thanks a lot!



Re: Oil through engine breather. Help please! (w. pics)
Sunday, June 13, 2010 8:57 PM
Yes one of the "ricer" filters will fit on there, but it will not stop the oil. The best thing is to get a catch can to separate and collect the oil. I ran a filter for about a year and now my engine is covered in it.





Re: Oil through engine breather. Help please! (w. pics)
Sunday, June 13, 2010 10:06 PM
yeah it looks ricey but i dont know any other option .. the hose broke..

anyway i dont think oil passing through there isnt normal ....

what i really want is to prevent it


Re: Oil through engine breather. Help please! (w. pics)
Sunday, June 13, 2010 10:10 PM
or is it normal?


can you show me a pic of the can installed?


Re: Oil through engine breather. Help please! (w. pics)
Monday, August 23, 2010 9:08 PM
if you buy an aftermarket intake it will take care of that or just replace hose it is normal to get a little blow by mine has the filter on right not but the can would be the best way it will keep your throttle body,hood and engine cleaner
Re: Oil through engine breather. Help please! (w. pics)
Friday, September 03, 2010 7:32 PM
oil catch can installed. works great


Re: Oil through engine breather. Help please! (w. pics)
Saturday, March 26, 2011 2:45 PM
Hey fernando, I had that same problem a year ago.
That thing broke off beacuse u stated to get oil in breather tube and it loosened that plastic that its connected to.
It just going to get worst and you r gonna have more and more oil coming out.
I installed catch can and it was fillining up pretty quick.
I read on other forum is that PCV POrt that is located on the intake manifold under the throttle body is blocked,
It was common issue with this vehicals,
Gm even recomonended that pcv hole is to small and they made a kit that is going to make that hole little bigger.Since all the gasses and oil can`t vent through PCV ,it start to come out one the breather hose,
Trust me it is gonna get much worse.
Re: Oil through engine breather. Help please! (w. pics)
Saturday, March 26, 2011 8:21 PM
i fixed it some weeks ago!

you just have to remove the valve cover and give it a heavy cleaning,

heavy duty industrial degreaser and a scrub works perfect,

1) rinse with water
2) spray a lot of heavy duty degreaser and let it seat for some minutes

repeat this process numerously until you see that clear water comes out freely from all the holes

this will allow the oil to run freely once installed back

(change oil & oil filter too)


Re: Oil through engine breather. Help please! (w. pics)
Saturday, March 26, 2011 8:25 PM
also painted it since it was already unistalled for cleaning




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Re: Oil through engine breather. Help please! (w. pics)
Saturday, March 26, 2011 8:32 PM
did u reuse valve cover gasket or u got new one
Re: Oil through engine breather. Help please! (w. pics)
Saturday, March 26, 2011 11:57 PM
nah!

if you carefully remove the valve cover when prying it out, the stock gasket will be good to re-use

(at least didn't need to replace mine, it was in good condition.)



Re: Oil through engine breather. Help please! (w. pics)
Sunday, March 27, 2011 12:06 AM
trust me, mine wasn't that bad and had the oil coming through the breather.

i've seen jobs we've done here at PR that underneath the valve cover were just speechless-nasty....

commonly this happens when you don't change your oil & oil filter regularly ( 3k miles / 3 months )

it gets clog and blocks the oil from running freely


Re: Oil through engine breather. Help please! (w. pics)
Wednesday, April 20, 2011 5:47 AM
I just picked up a 10 catch can off ebay and it works great no more oil in my intake.
Re: Oil through engine breather. Help please! (w. pics)
Wednesday, April 20, 2011 9:55 AM
yes, that could catch oil that isn't supposed to be coming out from there.
i had it for like 2 months, made a mess.
1)take the valve cover out
2)clean it with heavy duty degreaser to unclog all holes
3)mount it back
4)no oil coming out from breather

trust me on this one.


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