What is this hose/part? - JeepForum.com
 
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post #1 of 3 Old 06-09-2013, 08:45 PM Thread Starter
AquaToe
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2003 KJ Liberty 
 
Join Date: Jun 2013
Location: Ann Arbor
Posts: 3
What is this hose/part?

Hey everybody. New to Liberty owning and the forums here (awesome site!). I was checking over the hoses, fluids and general engine condition today and found a few cracks in both ends of the valve cover breather hose(? - Refrence). Wondering if anybody could tell me which direction the 3" plastic piece inline with the hose should go (there's an arrow on the side and I am thinking its supposed to vent FROM the valve cover but not sure) and further, what that plastic piece is? Thanks! Got a couple of pics too just for verification.

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post #2 of 3 Old 06-09-2013, 09:27 PM
streetglideok
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2005 KJ Liberty 
 
Join Date: Jul 2011
Location: Castle Pines
Posts: 3,073
It should draw air from the air intake resonator box to your valve cover. That's the direction of flow at least. It's for the pcv system, and if not ran right, or hooked up right, it'll start pumping oil right into your throttle body.
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post #3 of 3 Old 06-10-2013, 09:03 AM
TwoBobsKJ
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2003 KJ Liberty 
 
Join Date: May 2011
Location: Northern
Posts: 769
That hose and one on the other side tend to crack and split and give you vacuum leak faults. They both connect to fittings on the back of the cylinder head - I can't remember if they are 3/8" or 1/2" ID hoses but I replaced both when I swapped engines recently.

Dealer can supply them pre-bent or get a length of hose from NAPA or other auto parts store and it will work as well.

Bob

2003 Renegade, Black
- 3.7L, 42RLE, 4.10's, 4X Guard Trans skid, Factory Engine, T-case, Tank skids, Custom BoulderBars, OME 927/948, Bilsteins, JBA A-Arms & 1/4" top plate, 1 extra rear iso/side, Moabs with Goodyear Duratracs 265/70-16
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breather tube , vaccuum lines , Vacuum hose

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