Pcv Valve Is Hidden!

[babyhauler]

I SWEAR, I have looked for the thing. I have read several internet posts that say, "look for a valve that goes between the crankase and the air system". the alldata manual doesn't say where it is.

Also, does this engine have the screen, or any other pcv system element to change, too?

Oh, and I have the 1988 town car 5.0 efi

no, I do not know what I am doing, my first auto job ever was today. I changed the thermostat because my motor wouldn't heat up, and I found that it was stuck open. I wanted to change the pcv out today too, and now I will be thinking about it all night, until I find the thing.

thanks all!

[Old Geezer]

Check pc valve thread posted by This guy. Old Geezer :http://www.lincolnsonline.com/forum/member.php?u=19870

[ekooke]

See here: http://markvii.homestead.com/pcv.html

[87 town]

See here: http://markvii.homestead.com/pcv.html

Good little tutorial. I made a copy for later. Need to replace mine too. A mechanic once told me that I didn't even have one!
Thanks

[Sixlitre]

I keep looking for my "oil breather" filter

on my 1990 5.0 litre. My Bronco has one inside the air filter box, but it's looks like the 90' TC doesn't have one.

Sixlitre

[ekooke]

I keep looking for my "oil breather" filter

on my 1990 5.0 litre. My Bronco has one inside the air filter box, but it's looks like the 90' TC doesn't have one.

Sixlitre

What is an oil breather filter?

[gadget73]

The CFI cars have it. Its a foam block that sits over the end of the tube that goes from the valve cover to the intake. CFI cars have this connected to the side of the air cleaner assembly. The SEFI cars just have this plugged straight into the side of the throttle body.

[babyhauler]

I tried so hard to find it but finally gave up. I crawled up on top of the engine, reached back there, etc. I have to pass emissions to get my tags so I finally had to take it to a mechanic.

However, thanks to this site I learned a ton of stuff. next time I won't have the emissions deadline so I will use you guys to do all my own stuff.

Babyhauler

[Sixlitre]

I tried so hard to find it but finally gave up. I crawled up on top of the engine, reached back there, etc. I have to pass emissions to get my tags so I finally had to take it to a mechanic.

However, thanks to this site I learned a ton of stuff. next time I won't have the emissions deadline so I will use you guys to do all my own stuff.

Babyhauler

Babyhauler

Check this link on out;

http://www.supermotors.net/vehicles/registry/9371/52482

It'll show you neat pics of where the PCV valve resides, like this one;

http://www.supermotors.net/getfile/441105/fullsize/img_0049.jpg

and this one, of the PCV valve decending into that rubber grommet in the pic above;

http://www.supermotors.net/getfile/441106/fullsize/img_0050.jpg

I just passed two of the tests with flying colours, but failed my 3rd parts of the emissions test(the Hydrocarbons), just barely.

I am about to take her back in on Wednesday and after the couple of tricks I've tried I'm fairly confident she'll pass this time.

There's another post related to that in this section. BTW, I'm getting ahead of the game, as my stickers aren't due til' after Xmas. Nobody wants the test done in the cold or wants to have to repair the parts in the cold either, so I'm doing it now.

Sixlitre

[babyhauler]

Hey, sixlitre, those pictures are great- I actually pulled that hose out and put it back because the new pcv valve somehow looked different to me!

Anyway, I am expecting a complete diagnosis from the smog shop soon, curious what they have to say, no doubt the car needs a new engine, transmission, and body.

[Ivan D.]

Anyway, I am expecting a complete diagnosis from the smog shop soon, curious what they have to say, no doubt the car needs a new engine, transmission, and body.

Hmm, seeing how the only things you didin't mention on that list are the frame (which can be easily fixed if needed), and suspension (wear items anyways) it seems to me that you actually need a new car ;)

[Sixlitre]

Hey, sixlitre, those pictures are great- I actually pulled that hose out and put it back because the new pcv valve somehow looked different to me!

Anyway, I am expecting a complete diagnosis from the smog shop soon, curious what they have to say, no doubt the car needs a new engine, transmission, and body.

Babyhauler

Have ya been follwing my failed emissions thread ? I'm closing in on a pass using every dirty trick in the book.

Check it out in the 80-89 section

Sixlitre

[babyhauler]

Done. passed emissions today. It was the cats. sailed through with two new cats. My mechanic was a very good friend. Charged me $400. So far he won't tell me all he did to make it pass, but its running like new.

So Sixlitre, we will save the cheats for car #2 that I haven't bought yet. But I have to say, your old emissions thread had me laughing like no other.

The way they enforce emissions in Oregon is ridiculous. Now I am done.

Next up is making the car like new and finding a matching leather town car interior. After I relax a while. . .

[87 town]

Done. passed emissions today. It was the cats. sailed through with two new cats. My mechanic was a very good friend. Charged me $400. So far he won't tell me all he did to make it pass, but its running like new.

So Sixlitre, we will save the cheats for car #2 that I haven't bought yet. But I have to say, your old emissions thread had me laughing like no other.

The way they enforce emissions in Oregon is ridiculous. Now I am done.

Next up is making the car like new and finding a matching leather town car interior. After I relax a while. . .

I know it is a relief to finally pass the "test"...new cats got me through the last test. I think I paid like $450.

[babyhauler]

I know it is a relief to finally pass the "test"...new cats got me through the last test. I think I paid like $450.

Yea, so my buddy finally told me that all he did was put in the new cats. Ir really is amazing how many problems bad cats can cause. The backpressure was making me stall at every stopsign, and whenever coasting. The backpressure was causing vibrations at higher speeds. I am lucky it didn't cause some damage.

[87 town]

Yea, so my buddy finally told me that all he did was put in the new cats. Ir really is amazing how many problems bad cats can cause. The backpressure was making me stall at every stopsign, and whenever coasting. The backpressure was causing vibrations at higher speeds. I am lucky it didn't cause some damage.

Yep, i guess we should change em every 204k miles or so....lol...
that is how many miles my originals had on em.

[Sixlitre]

Yea, so my buddy finally told me that all he did was put in the new cats. Ir really is amazing how many problems bad cats can cause. The backpressure was making me stall at every stopsign, and whenever coasting. The backpressure was causing vibrations at higher speeds. I am lucky it didn't cause some damage.

Babyhauler

I know what you mean about a crapped out converter. I was rolling along in the Bronco at about 75 mph and I nailed it to pass someone and it fell on it's face !

Got it home and yanked the cat and peered in. All the Crunchie bar looking material was busted and you couldn't see through it anymore, unlike this;

http://www.supermotors.net/getfile/244953/fullsize/img_0064.jpg

Anyways, I was so disgusted I tossed it into the corner of the garage and half of the crunchie bar material fell out all over the floor.

An evil grin came over my face as I shook the rest out into the garbage can. Lookin' through she was plumb empty and unimpeded !

I done bolted her right back onto the emissions exempt Bronco and she took off like a scalded cat !

I might just change my Lincoln's cat just in case

I went to a large single 3" modern 3-way cat;

http://www.supermotors.net/getfile/244951/fullsize/img_0051.jpg

They're so cheap it's not funny, at $55.00 I may just throw another on, even though mine is only 16 months old.

I did HAMMER it last Winter on a major speed bump (I tell you, if anyone from the city had been within kicking distance I'd have launched his nads into orbit I was so angry !!!!!!!).

First I's gonna pull the running codes and maybe slap in a set of Bosch O2 sensors. My supplier has them for only $47.00 CDN each !

Sixlitre

[babyhauler]

Anyway, so I found out today that my buddy didn't change the pcv, it really was only the cats. He was just teasing me for being an auto ignoramus.

**I used these forums** to finally find that thing, and I did clean the metal filter behind it.

I can't believe I used to pay money to people to change my pcv! And I don't think they every changed or cleaned the filter.

I could do it again with 15 minutes labor.

And yes sixlitre, from now on I will only buy emissions exempt cars!

[87 town]

Anyway, so I found out today that my buddy didn't change the pcv, it really was only the cats. He was just teasing me for being an auto ignoramus.

**I used these forums** to finally find that thing, and I did clean the metal filter behind it.

I can't believe I used to pay money to people to change my pcv! And I don't think they every changed or cleaned the filter.

I could do it again with 15 minutes labor.

And yes sixlitre, from now on I will only buy emissions exempt cars!

one better. i had a mechanic once tell me that my car didnt have a pcv. reality is, he just didnt know where it was! i believed him for a while too!

[Sixlitre]

one better. i had a mechanic once tell me that my car didnt have a pcv. reality is, he just didnt know where it was! i believed him for a while too!

87

Autozone would have you believe that too

He and I looked under the hood for 5 minutes (I'll give him kudos for coming out and lookin' with me).

In the end I was popping the upper intake off anyway to slap on a set of FelPro PermaDryPlus valve cover gaskest, so I eventually found it !

I ordered that PCV grommet and I'm glad I did. the old one was rock hard brittle ! Next time I know I can get at least the grommet and filter;

http://www.supermotors.net/getfile/441096/fullsize/img_0035.jpg

aftermarket. I'll ALWAYS pony up for Ford genuine PCV though !

Babyhauler

It outta be easy for you to import a rust free car from Nevada or Arizona I'm sure ?

I'm never lettin' go of my exempt Bronco that's for sure !

Sixlitre

[J dog]

hey guys what are cats? like meeow cats???

[Tman70]

Just like a dog to be askin' about cats...

Cats = Catalytic Convertors = overly priced containers for platinum pellets which when heated act as a catalyst to chemically convert carbon monoxide, hydrocarbons and oxygen into carbon dioxide and water and then rust out the rest of your cars exhaust system...

[Scruffybeast]

One thing to remember when servicing the PCV valve. The screen which is under it (it is shown in some of the pictures) can become completely clogged, and if it does, you will experience oil leaks like you would not believe, because if there is any crankcase pressure, it has nowhere to escape. Some of the really bad filter screens can be a bear to remove, necessitating the use of a slide hammer to get them out! Unfortunately, after replacing the PCV valve, the screen and several gaskets, I still have so much crankcase pressure that oil leaks continue. I have connected a clear plastic hose to the dipstick tube and routed it into a 2 litre bottle, and at times, oil can be seen burping up into the tube. Looks like a tired engine to me. Yikes! Scruffybeast.

[Sixlitre]

One thing to remember when servicing the PCV valve. The screen which is under it (it is shown in some of the pictures) can become completely clogged, and if it does, you will experience oil leaks like you would not believe, because if there is any crankcase pressure, it has nowhere to escape. Some of the really bad filter screens can be a bear to remove, necessitating the use of a slide hammer to get them out! Unfortunately, after replacing the PCV valve, the screen and several gaskets, I still have so much crankcase pressure that oil leaks continue. I have connected a clear plastic hose to the dipstick tube and routed it into a 2 litre bottle, and at times, oil can be seen burping up into the tube. Looks like a tired engine to me. Yikes! Scruffybeast.

Scruffybeast

Have you tried some of this ?

http://www.supermotors.net/getfile/127977/fullsize/img_0267.jpg

I used it on my new 5.0 litre longblock only 5000 miles into the break-in because mine was exhibiting signs of blow-by (like your is).

Found out that the 5.0 litres (I've owned) would rather have regular oil (than synthetic) and more oil changes than synthetic and fewer oil changes. In other words, they gum up, like no other smallblock I've owned.

Point is, I stuffed that stuff in 15 minutes before an oil change, dropped the oil, did it all again twice more, a week apart and the blow-by disappeared.

Give it a try

Sixlitre

[Scruffybeast]

Thanks for the info, sixlitre. I learned about the synthetic oil the hard way. Changed the oil in both my 1988 Towncar and my 1997 Ranger 4cyl pickup. Both immediately exhibited increased oil leakage. Both cars now have been changed back to conventional oils. I really do hope that there is some chance for the 5.0 engine in the towncar. It is a junkyard engine of unknown vintage or mileage which was installed by the used car dealer I bought the car from. He stated that it was a low mileage engine. Either he lied to me or was lied to by the salvage yard from which the engine was purchased. Either way, I reaped the gory benefits, and the leaky engine is causing me to question whether this car is worth fixing, what with the other problems the car also has. Scruffybeast

[87 town]

Thanks for the info, sixlitre. I learned about the synthetic oil the hard way. Changed the oil in both my 1988 Towncar and my 1997 Ranger 4cyl pickup. Both immediately exhibited increased oil leakage. Both cars now have been changed back to conventional oils. I really do hope that there is some chance for the 5.0 engine in the towncar. It is a junkyard engine of unknown vintage or mileage which was installed by the used car dealer I bought the car from. He stated that it was a low mileage engine. Either he lied to me or was lied to by the salvage yard from which the engine was purchased. Either way, I reaped the gory benefits, and the leaky engine is causing me to question whether this car is worth fixing, what with the other problems the car also has. Scruffybeast
Didnt realize that a clogged pcv screen can increase leaks. i tried synthetic oil (leaked more) and went right to to 10/30 and 10/40 high mileage ultimately which seems to be the best. I also add a little Lucas Oil Treatment. I "think" my final leakage will be solved when I replace the valve cover gaskets and need to double check my pcv screen too. Had new oil pan and gasket done not long ago. Prior to that, my pan was leaking pretty bad.

[Sixlitre]

Didnt realize that a clogged pcv screen can increase leaks. i tried synthetic oil (leaked more) and went right to to 10/30 and 10/40 high mileage ultimately which seems to be the best. I also add a little Lucas Oil Treatment. I "think" my final leakage will be solved when I replace the valve cover gaskets and need to double check my pcv screen too. Had new oil pan and gasket done not long ago. Prior to that, my pan was leaking pretty bad.

You mean like these ?

http://www.supermotors.net/getfile/443878/fullsize/img_0012.jpg

Worked for me

Sixlitre

[Red91SiT]

Babyhauler

I know what you mean about a crapped out converter. I was rolling along in the Bronco at about 75 mph and I nailed it to pass someone and it fell on it's face !

Got it home and yanked the cat and peered in. All the Crunchie bar looking material was busted and you couldn't see through it anymore, unlike this;

http://www.supermotors.net/getfile/244953/fullsize/img_0064.jpg

Anyways, I was so disgusted I tossed it into the corner of the garage and half of the crunchie bar material fell out all over the floor.

An evil grin came over my face as I shook the rest out into the garbage can. Lookin' through she was plumb empty and unimpeded !

I done bolted her right back onto the emissions exempt Bronco and she took off like a scalded cat !

I might just change my Lincoln's cat just in case

I went to a large single 3" modern 3-way cat;

http://www.supermotors.net/getfile/244951/fullsize/img_0051.jpg

They're so cheap it's not funny, at $55.00 I may just throw another on, even though mine is only 16 months old.

I did HAMMER it last Winter on a major speed bump (I tell you, if anyone from the city had been within kicking distance I'd have launched his nads into orbit I was so angry !!!!!!!).

First I's gonna pull the running codes and maybe slap in a set of Bosch O2 sensors. My supplier has them for only $47.00 CDN each !

Sixlitre

I bet my cat was worse haha, http://www.imagestation.com/picture/sraid211/p7497b486dc9dcfc08a587f86d9643166/ed6c31c1.jpg Thats' exactly where it was when i took off the exhaust.