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Ccv/PVC and valve cover replacement?

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Old Mar 2, 2012 | 03:38 PM
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freegdr
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From: Broward County Fl.
Year: 1989 xj sport 2dr
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Originally Posted by jakbob
i got enough cell reception to watch... dont tell my boss...

right, but there is still vacuum. if there wasnt vacuum, why doesnt a vacuum leak whistle? and why isnt this filter (my pic) not covered in oil?

mind you, im not trying to come off as a dick. im trying to understand something my reasoning says is wrong (but if i am wrong, consider myself "learned" lol)
you must not have a lot off blow by to create a mess thats a good sign, not saying people dont do it but the hose is connected to help releave pressure .
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Old Mar 2, 2012 | 03:47 PM
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this explains it a littlehttp://en.wikipedia.org/wiki/Crankca...ilation_system
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Old Mar 2, 2012 | 03:59 PM
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Originally Posted by freegdr
helps some, but that has PCV valves. we dont have those.
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Old Mar 2, 2012 | 04:05 PM
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Originally Posted by jakbob
helps some, but that has PCV valves. we dont have those.
ccv is our version of it
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Old Mar 2, 2012 | 04:06 PM
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the small hole has the same effect as the ball keeping oil from being sucked thru it
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Old Mar 2, 2012 | 05:03 PM
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So does the rear hose coming out of the valve cover tie into the exhaust?
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Old Mar 2, 2012 | 05:16 PM
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Originally Posted by zebvance
So does the rear hose coming out of the valve cover tie into the exhaust?
heres a good picturehttp://www.naxja.org/forum/showthread.php?p=244474967
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Old Mar 2, 2012 | 05:16 PM
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and the whole system consist of the front one connection to the air box and rear to the exhaust?
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Old Mar 2, 2012 | 05:18 PM
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Originally Posted by zebvance
and the whole system consist of the front one connection to the air box and rear to the exhaust?
no exhaust any where involved...
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Old Mar 2, 2012 | 05:20 PM
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Originally Posted by freegdr

All those lines don't look like mine. I guess cause I have no ac? there is not compressor.
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Old Mar 2, 2012 | 05:21 PM
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Originally Posted by freegdr
no exhaust any where involved...
SO None of the ccv lines run into the egr then? Bare with me please.
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Old Mar 2, 2012 | 05:45 PM
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Originally Posted by zebvance
SO None of the ccv lines run into the egr then? Bare with me please.
No. The line that comes out the rear of the valve cover goes to the intake manifold. Like i said earlier, the ccv consists of a hose going from the top of the airbox to the front of the valve cover. Then towards the rear of the head, a line goes from there to the intake manifold.
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Old Mar 3, 2012 | 04:26 AM
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Originally Posted by freegdr
pull the rear line off and spray carb cleaner into the tube to clean it out watch for back spray in the eyes,the front tube should not be unhooked from the throttle body suction this removes crank case pressure when vacuum is not present such as accelration and high way speed excessive crank case pressure can cause gasket leakage and excessive blow by
I have a cold air intake on mine and I really don't think there is enough negative vacuum in the intake pipe to help draw gases out any more than the engine pushes it out.
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Old Mar 3, 2012 | 05:06 AM
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Originally Posted by BODCherokee
I have a cold air intake on mine and I really don't think there is enough negative vacuum in the intake pipe to help draw gases out any more than the engine pushes it out.
when the engine is brought of idle the suction from the throttle body draws it out thru the front hose in the valve cover thru your cold air intake tube
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Old Mar 3, 2012 | 03:40 PM
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Originally Posted by freegdr
when the engine is brought of idle the suction from the throttle body draws it out thru the front hose in the valve cover thru your cold air intake tube
Yes I get that that is how it works but I really don't think there is enough suction on the little hose to actually draw it out enough. Just saying its fine just putting a filter on the front valve.
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