Replacing PCV Valve

JohnnyCash · **Posted:** Sat Jun 21, 2008 5:04 pm

Where exactly is the PCV valve located?
Is that it under the overflow reservoir?

What steps do I take to replace it?

jeepkj02 · **Posted:** Sat Jun 21, 2008 5:30 pm

The PCV valve is attached to the oil filler tube. Just remove the hose attached to it (good idea to replace the hose also) and twist it off.

sleeve84028 · **Posted:** Sat Jun 21, 2008 6:02 pm

On the oil filler tube...

Twist in a downward motion and then it will slide out.

You might need some pliers to get a good grip on the plastic for the twisting part.

KJ04 · **Posted:** Sat Jun 21, 2008 11:08 pm

When you get it out shake it, if it rattles it's still good, put it back in.

tjkj2002 · **Posted:** Sat Jun 21, 2008 11:12 pm

KJ04 wrote:

When you get it out shake it, if it rattles it's still good, put it back in.

Not true at all,jsut because it rattles does not mean it's still good.For $5 you can't go wrong by replacing it every 30,000 miles with your spark plugs.

sleeve84028 · **Posted:** Sun Jun 22, 2008 9:15 am

I let mine go for 40K miles early on, but lately I've been replacing it every 10K miles. I bought a whole lot of them from the auto parts store so they are readily available in my garage. It's quick and easy preventive maintance.

jeepkj02 · **Posted:** Sun Jun 22, 2008 11:36 am

tjkj2002 wrote:

KJ04 wrote:

When you get it out shake it, if it rattles it's still good, put it back in.

Not true at all,jsut because it rattles does not mean it's still good.For $5 you can't go wrong by replacing it every 30,000 miles with your spark plugs.

I like to take mine out every oil change and clean it good with some TB cleaner.

JohnnyCash · **Posted:** Wed Jun 25, 2008 10:50 pm

jeepkj02 wrote:

The PCV valve is attached to the oil filler tube. Just remove the hose attached to it (good idea to replace the hose also) and twist it off.

There is absolutely nothing attached to my oil filler tube. (that's the tube where you pour in the oil right?).

Can someone please explain in more detail where it is located? I can't find it.

tjkj2002 · **Posted:** Wed Jun 25, 2008 10:57 pm

JohnnyCash wrote:

jeepkj02 wrote:

The PCV valve is attached to the oil filler tube. Just remove the hose attached to it (good idea to replace the hose also) and twist it off.

There is absolutely nothing attached to my oil filler tube. (that's the tube where you pour in the oil right?).

Can someone please explain in more detail where it is located? I can't find it.

Below is a pic of the PCV valve(circled in yellow) on my KJ,it's the same location for the '02-'06 KJ's with the 3.7 foresure,might be different on the '07's.

JohnnyCash · **Posted:** Thu Jun 26, 2008 12:27 am

Thanks for the picture.
The '07 is definitely different.
There is nothing at all like that connected to the oil filler tube.

Any ideas how I can find it?
Is there a certain hose I can follow to find it?

sleeve84028 · **Posted:** Thu Jun 26, 2008 7:54 am

The hose 'Should' go from one of the valve covers to the trottle body area.

Sucks that they've moved it... But at least you'll be able to help us locate the new postion.

Replacing PCV Valve

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