PCV valve, Sea-Foam and Tune-Up for 1999 Explorer 302 AWD V8 302 8 cylinder

[Kriegen]

So if im looking at the pictures right the hose coming from the brake booster plugs into the pcv?

Negative, it just sort of looks that way in the pics

 

[99ex22]

hmmm I think im going to give up and try again in a couple years....That worked for celly. haha

 

[Kriegen]

If you are standing directly in front of the explorer, you will see a large electrical junction at the opposite end of the engine mounted on the back of the engine compartment. I'm kinda short so I got up and laid down on top of the intake manifold, reached straight down below that electrical junction probably about 6-9 inches and could feel a hose with a foam piece on the end. Pull straight up on the foam piece and attached at the end is the PCV valve. There's not a lot of play in it, you'll only be able to pull it up a little above the intake manifold if you haven't disconnected the other ends.

I'm seriously considering putting in an oil separator like in this thread to both collect any atomized oil coming out of the PCV and also to make doing seafoam treatments easier

Here are a couple of pictures linked from MountaineerGreen's spacer install.

The valve is straight down from this electrical junction:

PCV valve location with the upper intake off

 

[celly]

If you are standing directly in front of the explorer, you will see a large electrical junction at the opposite end of the engine mounted on the back of the engine compartment. I'm kinda short so I got up and laid down on top of the intake manifold, reached straight down below that electrical junction probably about 6-9 inches and could feel a hose with a foam piece on the end. Pull straight up on the foam piece and attached at the end is the PCV valve. There's not a lot of play in it, you'll only be able to pull it up a little above the intake manifold if you haven't disconnected the other ends.

You've described its location perfectly above.

This photo helped me. It's the un-installed PCV assembly showing the foam piece just above the PCV valve. The sort of threaded part at the end is the grommet that goes into the crankcase and the PCV valve rests in it. The PCV should slide out of the grommet with little effort, leaving the grommet in the crankcase. The positioned the assembly roughly above where it goes underneath the upper intake.

 

[Kriegen]

Celly, did you ever get your spacer installed?

 

[celly]

I'm seriously considering putting in an oil separator like in this thread to both collect any atomized oil coming out of the PCV and also to make doing seafoam treatments easier

Please do, so I can copy you.

Celly, did you ever get your spacer installed?

It was installed as part of the header install in July. Hard to know what it did for me since it got installed the same time as the headers.

 

[99ex22]

You've described its location perfectly above.

This photo helped me. It's the un-installed PCV assembly showing the foam piece just above the PCV valve. The sort of threaded part at the end is the grommet that goes into the crankcase and the PCV valve rests in it. The PCV should slide out of the grommet with little effort, leaving the grommet in the crankcase. The positioned the assembly roughly above where it goes underneath the upper intake.

I pulled that hose shown above out and I didnt see any PCV. just looked like a hose to me. Maybe im retarded.

 

[99ex22]

ok i just went out and pulled that hose out of the crankcase. Now do I need to disconnect the hose anywhere else or is that it?

 

[Kriegen]

Should be able to see the PCV valve at the end, might be kind of shrouded by the foam piece. The pic by Celly shows the PCV in the grommet which you don't need to pull. Another thing which might be confusing; a lot of PCV valves you buy might have an plastic elbow on them, this will just pop off as it isn't needed for our engines.

 

[99ex22]

Pulled pcv out of hose. sorry for all they questions guys but I want to make sure that this is where I poor the seafoam in?

 

[celly]

ok i just went out and pulled that hose out of the crankcase. Now do I need to disconnect the hose anywhere else or is that it?

You now have to remove the PCV valve from the hose and pour the Seafoam into the hose where the PCV valve was. Don't pour it into the crankcase! You'll need to be creative as to how you'll pour the Seafoam. I used a small funnel attached to a small section of hose which had a plastic nipple on the other end that fits into the PCV hose.

Once complete with the Seafoam treatment, slide the PCV valve back into the hose and then the PCV valve and hose goes back into the grommet.

 

[celly]

Pulled pcv out of hose. sorry for all they questions guys but I want to make sure that this is where I poor the seafoam in?

You're almost there. Seafoam goes into the void left by the PCV valve.

 

[99ex22]

the void left by the PCV valve as in I poor the seafoam into the hose that I pulled the pcv out of?

 

[Kriegen]

the void left by the PCV valve as in I poor the seafoam into the hose that I pulled the pcv out of?

Yes, the hose the PCV was attached too, NOT the crankcase. The idea is for it to get sucked into the intake manifold through the hose.

 

[celly]

Yes, the hose the PCV was attached too, NOT the crankcase. The idea is for it to get sucked into the intake manifold through the hose.

Therein lies why the PCV method is better. Look at the photo of the PCV assembly again and it's clearer. The Seafoam will get drawn into the engine in two spots. One in the front and one in the rear. Better coverage! The BB method sucks it in from one spot at the back.

 

[99ex22]

Thank you guys very much for your help! My nieghbors hate me!

 

[Kriegen]

Finished the seafoam?

Notice any difference in how the engine runs?

 

[99ex22]

Yeah It runs a little smoother now. I need to get in to a shop for my exhaust manifold leak (under warranty) otherwise I would go for the TM Headers. Im going to be checking my bran spankin new motorcraft plugs tomarrow to see if the seafoam messed them up.

 

[99ex22]

to everyone thats used seafoam and it hasnt smoked, this is what should be happening....

That picture was taken not even 30 seconds after I started it.

 

[Tavery1]

Ok WTF I've spent an hour today looking for my PCV, I have a 98 XLT SOHC can someone give me a hand? Also once I get that out the Seafoam I just let the hose suck it up, or pour it into the hole that the PCV came out of? Thanks