pcv valve

Reply Subscribe

Thread Tools

Search this Thread

Sep 19, 2011 | 03:52 PM

sethyyy

Thread Starter

Junior Member

Joined: Dec 2010

Posts: 84

Likes: 0

From: Grand Haven, Mi

Year: 1990

Model: Cherokee

Engine: 4.0

pcv valve

my air filter always gets some oil on it. i was told to replace my pcv valve, would that fix my problem? thank you guys.

Sep 19, 2011 | 04:46 PM

jeep bandit

CF Veteran

Joined: Aug 2010

Posts: 1,541

Likes: 2

From: conn.

Year: 1990

Model: Cherokee

Engine: 4.0 litre

I am 98.482% sure there is no Pcv valve. It's got a ccv.

Sep 19, 2011 | 06:14 PM

cruiser54

::CF Moderator::

Joined: Aug 2011

Posts: 43,971

Likes: 1,579

From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

You don't have one. It's a CCV system. It's very important that those pipes that go into the valve cover aren't melted, clogged or cracked. If they are any of those, replace them to get the sustem to work properly.

Sep 19, 2011 | 06:20 PM

sethyyy

Thread Starter

Junior Member

Joined: Dec 2010

Posts: 84

Likes: 0

From: Grand Haven, Mi

Year: 1990

Model: Cherokee

Engine: 4.0

thank you guys.

Sep 19, 2011 | 07:00 PM

tjwalker

CF Veteran

Joined: Nov 2010

Posts: 5,841

Likes: 117

From: In the middle of Minnesota!

Year: 1999

Model: Cherokee

Engine: 4.0

CCV system is correct. No PCV valve.

Either you have true blowby (ring issue) or you have a clogged CCV system. A clogged CCV system is EXTREMELY common on the 87-90 XJ and you should remove valve cover, thoroughly clean it, replace both of your CCV hoses AND grommets, and see if that helps before you do anything else.

Read this thread:

http://www.cherokeetalk.com/forum/f8...d-blowby-5870/