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Crankcase Ventilation?

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Old Jul 30, 2015 | 04:41 PM
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Question Crankcase Ventilation?

Hey everyone,

I tried searching for this but I didn't really come up with anything. Could this explain why my idle is wonky? I never noticed I had a leak until today when I had the engine cover off. It looks like there's a little plastic duct that comes off that 'T' shaped box, but it's snapped so I can't just put the hose back on it

What exactly does this do and is it a bad idea to drive around right now? I have no idea how long this has been like this, so I ordered a new crankcase ventilation assembly off Nissan just in case it's urgent to fix right away


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Last edited by Depravity; Jul 30, 2015 at 04:43 PM.
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Old Jul 30, 2015 | 04:54 PM
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you are letting air, and whatever else to bypass the filter......
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Old Jul 30, 2015 | 05:03 PM
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If you need to drive immediately go to autozone and get a mini filter to slap on for now.
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Old Jul 30, 2015 | 05:08 PM
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I think I'm going to leave the engine shield off from now on. Seriously, I had no idea it was even like that otherwise I would have taken care of it immediately
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Old Jul 31, 2015 | 07:58 AM
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What ever you do, don't cap that vent, the previous owner of my car did that and it caused sooo many problems. Vent it with a filter, or grab that little piece from Nissan and replace it.
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Old Aug 3, 2015 | 01:57 PM
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I ended up just getting that little square piece off Nissan. I had to purchase the entire assembly for $123.14 but at least the problem is fixed. No more idle issues

Last edited by Depravity; Aug 3, 2015 at 02:05 PM.
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Old Mar 3, 2025 | 04:55 PM
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Default What’s the name of that part ?

Originally Posted by Depravity
I ended up just getting that little square piece off Nissan. I had to purchase the entire assembly for $123.14 but at least the problem is fixed. No more idle issues

what’s the name of that part ?
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