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what is this part for?

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Old Apr 10, 2007 | 07:01 AM
  #1  
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tomtoc
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what is this part for?

so this has been like this forever, but the part below circled in red, hasn't been able to connect to both ends that it's supposed to. it's like an inch to short to be in both. i can get it in one end or the other, but it's just too short.

so, what is it. what does it do and how do i fix it?



edit: fyi - air filter on bottom right. one end of this is just past the MAF
 

Last edited by tomtoc; Apr 10, 2007 at 07:27 AM.
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Old Apr 10, 2007 | 08:35 AM
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It looks like a crankcase breather tube from the valve cover. jd
 
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Old Apr 10, 2007 | 10:12 AM
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I agee with JD, this plumbing offers clean filtered air to the PCV system, to purge the engines blow by fumes.

Believe it or not, mine was delivered with this disconnected from the air tube. No I didn't plug it back in, I had the Dealer do a work order, so there was a record of it. Means the factory final quality check & the Dealers "Pre-delivery" folks missed it!!!! Shame Shame Shame!!!!
 
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Old Apr 10, 2007 | 10:40 AM
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ok, so it's a breather tube

i assume right now it's basically not working since it doesn't fit in either end very well. should i just leave it go and forget it? take it to the dealer?

it doesn't feel like anything is broken so if i or they order a new part, it still seems like it's an inch or two too short. thoughts?
 
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Old Apr 10, 2007 | 11:32 AM
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You can replace it with just regular rubber hose from any auto parts store.

When I got my new intake, there was no hookup for the tube, so I just ran a longer line out the bottom of the truck until I can get a breather filter on it.
 
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Old Apr 10, 2007 | 11:51 AM
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DON'T leave this hose disconnected!!!!

To do so means your engine is breathing in overheated, un filtered, dirty, gritty, grimy, air & it'll load the valve & crankcase with plenty of wear agents, contaminate the oil & engine with all sorts of mischief.

You need to have it connected to the intake air tube as intended, so that the PCV system is being fed cool, filtered air, so it'll function properly as designed.
 
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Old Apr 10, 2007 | 05:21 PM
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I know that at least on my OHV...the PCV valve is nowhere near this hose, in fact it's on the other side of the engine.
 
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Old Apr 10, 2007 | 06:08 PM
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Originally Posted by RangerPilot
I know that at least on my OHV...the PCV valve is nowhere near this hose, in fact it's on the other side of the engine.
This tube (pictured) is the inlet side of the pcv system. The air enters here and goes into the crankcase. The air is pulled out of the engine behind the throttle plate with a hose that is connected to the pcv.

The concerns voiced about leaving this hose disconnected are all accurate. The air into the crankcase should be filtered to avoid contamination and wear issues on the moving parts. The air entering through the disconnected hose is unmetered by the maf, which means that the ecu isn't being aware of this air and the engine potentially is running lean because of it, if the fuel trims can't be adjusted enough to compensate for that. It needs to be connected.
 
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