5.7 Hemi PCV Valve - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 10 (permalink) Old 04-05-2011, 11:30 PM Thread Starter
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5.7 Hemi PCV Valve

Hello,

Does anyone know if there is a difference in installing the valve with the hole facing the front or the rear of the engine?

Trying to find an oil leak and have traced it to the PCV Valve?

Thanks...not sure it would make any difference..

OUT!
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post #2 of 10 (permalink) Old 04-06-2011, 09:30 AM
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Quote:
Originally Posted by seedsntrees View Post
Does anyone know if there is a difference in installing the valve with the hole facing the front or the rear of the engine?
A little vague? Are you talking about swapping around the PCV so the engine end goes toward the vacuum line and the Vacuum line end goes to the engine? In that case, NO, it should NOT work at all and could create problems.

Are you talking about just twisting it around, the same ends going to the same connections, the valve is just orientated differently? I can't see how that would be a problem, but you never know.

A bad PCV would let you suck oil into the intake and you'd be loosing oil. Only bad seals would let some oil leak out of the connections of the PCV and that should only be a little bit to make some grime on the engine.

Overfilling the oil level, can cause the oil to foam, and if it did that, one of the places the foamed oil would force itself out would be the PCV valve, could to much oil in the engine be your problem?


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post #3 of 10 (permalink) Old 04-06-2011, 10:15 AM Thread Starter
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Hi,

I'm referring to the valve itself and the hole it has in it. I don't think it matters if the hole is facing the vacuum line or not, but thought I would ask.

Thanks,
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post #4 of 10 (permalink) Old 04-06-2011, 10:32 AM
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Quote:
Originally Posted by seedsntrees View Post
I'm referring to the valve itself and the hole it has in it. I don't think it matters if the hole is facing the vacuum line or not, but thought I would ask.
Hopefully a Hemi Owner knowledgeable enough will come along to answer this, the only holes I'm aware in PCV valves are the holes for neck/nipple to allow the air to flow through it. I sounds like you talking about some other hole, and I guess there must be something different about the Hemi PCV then.


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post #5 of 10 (permalink) Old 04-06-2011, 12:19 PM
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Yeah the hemi has a special pcv. Ill take a closer look at mine when I get home and let you know. There are arrows you're supposed to line up and then twist, I don't recall if there were two arrows 180 degrees apart though. If there aren't two arrows, I'd double check your install.

-Matt
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post #6 of 10 (permalink) Old 04-06-2011, 04:42 PM
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Just took a closer look.

While it doesn't look like it would be an issue because the diameter of the housing is larger than the diameter of the PCV where the hole is, I would align them anyways.

My memory was jogged after i took it out... there is actually a "slot" that leads into the hose. So i purposely aligned the hole with that slot.

For the 2 minutes it takes to R&R, might as well line it up IMO. (That includes R&R of the engine cover... it's really easy to do).

-Matt
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post #7 of 10 (permalink) Old 04-08-2011, 09:54 AM Thread Starter
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Thanks,

Picked up a replacement at the local dealer. Service Mgr looked it up and said it does not make any differecne. On the DODGE forum, they seem to install the valve with the hole facing to the rear of the engine.

It is one of those "Go Figure" items of engerering!

I installed it with the hole facing the rear of the engine, opposite the intake hose fitting.

Thanks,
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post #8 of 10 (permalink) Old 04-08-2011, 12:13 PM
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You guys would know better than, since I do NOT have the Hemi, but looking at some picks I googled, it looks like a metering opening or orifice, as long as it doesn't have to line up with another hole, I'd agree it shouldn't matter.


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post #9 of 10 (permalink) Old 04-09-2011, 01:14 PM
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anyone with a service manual for correct procedure...thx
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post #10 of 10 (permalink) Old 04-09-2011, 04:21 PM
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Page 23 and 24.

http://www.scribd.com/doc/20028963/J...ssions-Control

2006 Black 65th Anniversary Edition
3.7L V6
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