PCV Oil Catch Can, see what your engine is burning!

I have a 98 dodge ram, will this mod work on that?

if you have a pcv system you can do this mod. you just have to determine the best place in your engine bay to mount the seperator and run the hoses.

Yes, you can install it on any engine with a PCV valve.

Just have the sparator in between the PCV valve and the intake.

Here's a home-made version. It's in japanese, but the pictures tell the story. It looks like a motorcylce, but you get the idea.
This method will have less pressure drop than the compressed air type filters. You could use one of those 16 ounce aluminum beer bottles that Bud and Miller have out now to do this real cheap, just make sure it is sealed well.
http://www.synapse.ne.jp/s-hara/bandit/blowby.html

Ahh, I want one of those. Excellent.
i agree , need to do :grinyes:

i agree , need to do :grinyes:

You will be amazed to see how much it holds in the winter for sure that would be going back to your intake.

Crud is disgusting light brown color and loaded with fuel.

I installed this a few weeks back and I check it daily and dump it weekly. The "goo" I am getting out is a mixture of light brown sludge and gas. Someone earlier had mentioned a "indicator of lower intake gasket failure" and I was wondering if this light brown sludge is that. Or the light brown what I am looking at getting out. Just want to make sure I am not headed for certain disaster without knowing it!

if you did have a gasket starting to fail, that catch can would have probably have some coolant in it. light brown sludge (oil/gas mix) is normal.

I installed this a few weeks back and I check it daily and dump it weekly. The "goo" I am getting out is a mixture of light brown sludge and gas. Someone earlier had mentioned a "indicator of lower intake gasket failure" and I was wondering if this light brown sludge is that. Or the light brown what I am looking at getting out. Just want to make sure I am not headed for certain disaster without knowing it!

It is just condensation from the cold, it is not a failure.

Pour it out onto a flat white plate and look for blobs of bright orange coolant forming, other than that, it is just fuel, oil, water and contaminants.

Thanks for the info!! .

BlazerLT:
I am thinking about installing this on my truck but have a quick question for you. What type of catch can did you buy, was it a air/oil or air/moisture type? I was looking online and don't want to buy the wrong thing, not to mention the air/oil ones seem too expensive. On the other hand I am not sure if the air/moisture type are made of a plastic that can handle oil or fuel. Thanks for your time.

Any air compressor air/water separator will work fine. You can get them at Home Depot cheap. Don't buy it online, buy it local so you can take it back if there is a problem.

You will be amazed when you see how much it catches.

Hi guys!! I want to do this mod, but I am a little confused on where the the opposite end of the hose connects. My engine looks similiar to the pictures in post #173, 1996 Chevy S-10. I know the PCV side, but can someone post a clear picture of where the opposite end connects?

The reason for the confusion is there is a line that comes out of the passenger side valve cover and pipes right into the box that sits on top of the throttle body. You can see it in post #173. Looking at the pics it looks like it connects there....just wan tto be sure.

Sorry for the silly question, I just want to make sure I am connecting the end up to the right.:screwy: Thanks to everyone in advance for the great forum and help.

Hi guys!! I want to do this mod, but I am a little confused on where the the opposite end of the hose connects. My engine looks similiar to the pictures in post #173, 1996 Chevy S-10. I know the PCV side, but can someone post a clear picture of where the opposite end connects?

The reason for the confusion is there is a line that comes out of the passenger side valve cover and pipes right into the box that sits on top of the throttle body. You can see it in post #173. Looking at the pics it looks like it connects there....just wan tto be sure.

Sorry for the silly question, I just want to make sure I am connecting the end up to the right.:screwy: Thanks to everyone in advance for the great forum and help.
one end goes from the pcv to the catch can and the other end attatches to the factory connection on the intake manifold under the plastic intake "hat". whith the stock pcv system still in place, remove the air intake pipe from the hat, then loosen the wing nut on the hat and pull it toward you. you will then see exactly where the other connection is.

Sorry to those who may want this to stop comming up. But after about a year of wanting to do this i went ahead a bought everything last week and had free time to do it. I poped it in started up and everything was fine it idle fine no problems, yet atleast. Im really looking forward to see if there is gunk that gets deposited in there. I have a new jasper motor so it shouldnt be that bad but im sure ill see some somthing. Any way i posted some pics b/c well they never hurt and could help who ever is thinking about it. tell me if you guys see somthing i dont. thanks

http://i42.photobucket.com/albums/e319/eslhockey92g/Picture015-1.jpg

http://i42.photobucket.com/albums/e319/eslhockey92g/Picture018-1.jpg

http://i42.photobucket.com/albums/e319/eslhockey92g/Picture016-1.jpg

http://i42.photobucket.com/albums/e319/eslhockey92g/Picture014.jpg

as you can see i ran from the pcv right to the can, than around the abs thing and back to the top of the intake. I need to get longer clamps or i will make a bracket to hold the can better. but its good for now. I wasnt sure if the length of the hose will be a problem i hope not its about 5 feet long and i think that the long curve will be ok.

shorter the hose length the better, system is more effective that way. where did you mount the catch can( cant really see it in the pics)? i hung the can off the wiring harness near the wiper motor. i ran the line up under the master cylinder, over the brake booster, to the can, then from the can right to the manifold. my pics are in post 113 or somewhere close to that. i may even change to a hose going straight up from the pcv to the can. you really don't need the hose clamps on there. i've had this installed since september when i got my truck and have not had any problems.

im running right from pvc to the can mounted under the brake booster, on that brake line distributor thing. than from there it wraps around the ABS system right in to the manifold. i was trying to see if there was a smoother was to run everything w/o any aggresive kinks but i did feel confertable in some of the positon. Oh an by the way i have accumlated about a 1/4 inch of oil and what not in the bottom of mine already:eek2:

yea when you first install it you will accumulate alot of stuff but from then on it fills very gradually until you decide to empty it. mine has never really gotten over half full. i might shorten up the hose from the pcv to the can and see if that make the system more effective.

o ok kool that what i was thinking, yeah mine is only about foot and a half tops from the pvc to the can. it goes stright to the can having some slack for engine movement

o ok kool that what i was thinking, yeah mine is only about foot and a half tops from the pvc to the can. it goes stright to the can having some slack for engine movement
i guess the set up just looks longer in the pics than it really is.

What happened to BlazerLT? :dunno: What now that he's got a hemi, he thinks he's too good for us lowly Blazer owners? :lol:

What happened to BlazerLT? :dunno: What now that he's got a hemi, he thinks he's too good for us lowly Blazer owners? :lol:
pretty much :disappoin

pretty much :disappoin

:disappoin:disappoin

Hey now, I had internet ISP problems and it was taking forever for me to access this topic so i had to wait till it was fixed, which just happened 10 minutes ago.

I just haven't been having any problems with the car now so I haven't been coming to this forum much. The 300C forum here is dead compared to the Blazer/s-series.

I have to admit, and this is not a cheap shot to you guys, but I don't miss the truck at all. I don't have any problems anymore and if a small thing come up here and there, it is covered under my warranty.

Don't hate me for likeing my car, my god it is fast.

What is the direction of flow?


here are some pics of the install on my 2000. after about 30-40 miles, its already started trapping stuff, just like my 95 did.
http://img217.imageshack.us/img217/1821/catchcan1nh8.jpg
http://img217.imageshack.us/img217/4508/catchcan2dw5.jpg

the flow is from the pcv to the catch can, then to the intake manifold.

Hey now, I had internet ISP problems and it was taking forever for me to access this topic so i had to wait till it was fixed, which just happened 10 minutes ago.

I just haven't been having any problems with the car now so I haven't been coming to this forum much. The 300C forum here is dead compared to the Blazer/s-series.

I have to admit, and this is not a cheap shot to you guys, but I don't miss the truck at all. I don't have any problems anymore and if a small thing come up here and there, it is covered under my warranty.

Don't hate me for likeing my car, my god it is fast.

In my humble opinion, (not that anyone asked for it) In the spirit of purity, I think you should change your picture. :grinyes:

You can keep the name (so we know who you are) but post the new ride. Keeping the same picture is like keeping the Prom picture of the girl you almost married in hopes that some day she'll return.:banghead:

going on a solid week and wow

http://i42.photobucket.com/albums/e319/eslhockey92g/Picture004.jpg

this thing does work, Wether it is good or bad, whitch it seems like people will fight on this topic for ever, but im happy

im not surprized. remember to empty it before the level gets to the filter. after couple weeks it will fill alot slower, unless you have a ton of crap in that engine :lol:. its definately worth the $30 for this mod, it does work.

Id hope theres not alot of crap in it, its a new jasper motor with about 7000 miles on it. I has not even tasted synthetic oil yet, but yea i check my fuild every weekend, so ill keep my eye on it. I wont let it get closer the the filter at all but out of curiosity what would happen?

if you constantly let the filter get submerged in oil and what not it could clog. if you empty it before then, the filter should not clog. you can try to clean the filter every so often but i personally never had much luck doing so. i forgot you just swapped engines. I believe what you are experiencing is normal. When i first installed it on my old truck, the catch can filled rapidly for a week or so, then it would fill very gradually from then on. Other people have experienced the same thing. On my current truck, after the first week or two, i had to empty it once. Since then it has never gotten passed 1/4 of the way full.

sounds good thanks, yea i hit the filter with some brake clean and it whitened up some so i figure ill be fine as long as i dont let it do

good info

I put one in my Burb and will do the blazer next

http://img.photobucket.com/albums/v448/therealsundance/DSCF0070.jpg

http://img.photobucket.com/albums/v448/therealsundance/DSCF0069-1.jpg

http://img.photobucket.com/albums/v448/therealsundance/DSCF0068-1.jpg

looks like a nice install. i'm assuming thats a 350. post pics of your blazer's install also.

looks like a nice install. i'm assuming thats a 350. post pics of your blazer's install also.



You assume correctly!


I'll get to the blazer in a few weeks.

I did the burb because we are taking a road trip to FLA.

I put one in my Burb and will do the blazer next

http://img.photobucket.com/albums/v448/therealsundance/DSCF0070.jpg

http://img.photobucket.com/albums/v448/therealsundance/DSCF0069-1.jpg

http://img.photobucket.com/albums/v448/therealsundance/DSCF0068-1.jpg

That is a wrong install.

It has to go to the intake, not the oil fill tube.

Your setup will do nothing other than impregnate the oil with fuel and raise crackcase pressures.

All you did was install a pointless loop.

how many have had less oil burn/usage ????

That is a wrong install.

It has to go to the intake, not the oil fill tube.

Your setup will do nothing other than impregnate the oil with fuel and raise crackcase pressures.

All you did was install a pointless loop.

It looks like he rotated the hard plastic tube from the intake that previously went to the PCV valve, and now the hose connects to that tube. The connection appears to be hidden by the filler pipe, and not connected to the filler pipe itself.

how many have had less oil burn/usage ????

This isn't meant to stop oil usage, it is just stopping it from gumming up the intake.

It looks like he rotated the hard plastic tube from the intake that previously went to the PCV valve, and now the hose connects to that tube. The connection appears to be hidden by the filler pipe, and not connected to the filler pipe itself.

Ah, I hope that is the case.

This isn't meant to stop oil usage, it is just stopping it from gumming up the intake.
i'd think it would help some that have blowby problems

How often should one change his pcv valce?

How often should one change his pcv valce?
i do it with the air filter

i do it with the air filter

Or once a year.

No, don't remove your PCV valve. One critical function of the PCV valve is to prevent backfiring flame from getting back into the crankcase. ...

Doesn't electronic timing totally prevent that anyway???

The plug for a particular cylinder can't fire, except for when the intake is closed. Right???

Doesn't electronic timing totally prevent that anyway???

The plug for a particular cylinder can't fire, except for when the intake is closed. Right???
there are duo firing systems

PCV valves are designed nt to prevent back fire, but to assure PCV vapor flow is in one direction only.

Its right that the intake manifold should suck yeah?? Then surely the pcv chamber should blow???????????????

My pcv chamber seems to be sucking:shakehead . Is this a fault??

When my pcv is connected my engine pressurises and whines loudly. The second i disconnect the valve from the chamber the engine goes back to normal

Any help greatly appreciated

Its right that the intake manifold should suck yeah?? Then surely the pcv chamber should blow???????????????

My pcv chamber seems to be sucking:shakehead . Is this a fault??

When my pcv is connected my engine pressurises and whines loudly. The second i disconnect the valve from the chamber the engine goes back to normal

Any help greatly appreciated

Can you clarify this, it is making no sense.

Sorry

I own a 1999 Honda integra type r

Since i've had the car it has idled styrangely from 1500rpm to 2000rpm no matter how hot the car is. So i thought "strange"

I decide to have a look around the enigne bay and noticed the pcv valve pipe under the intake manifold was lying loose outside the chamber. I thought great all i need to do is plug it back in. When i plugged it back in and started her up she was idling smoothly at 1000rpm. Roughly 30 seconds into running the car a loud whirring noise appeared and the engine started to pressurise(When i took the oil cap off it wanted to suck my hand in).

I unplugged the pcv valve from the chamber with the car still running and the noise dissapeared and there was no pressure however the idle had obvioulsy gone back to its old self.

I took the pcv valve off.Did all the checks. Its not blocked and it rattles when i shake it.

The intake manifold seems to be sucking which it should do but so does the chamber(i thought the chamber should blow??)

What im wondering is "Does anybody know my problem"????

Thanks

Completely normal seeing the intake manifold is providing the suction for the pcv system.

I would replace the PCV valve seeing it is probably due for a replacement.

I've just taken the pcv valve and pipe off my car again. I can blow through the pipe and pcv valve towards the intake manifold but try and blow the other way(intake to chamber) and i cant get a sinlge breath through.
Is this correct or does it sound like the valve is knackered?

Thanks again

do you have the valve backwards in the tube?

does the pcv valve rattle when you shake it? it should.



I've just taken the pcv valve and pipe off my car again. I can blow through the pipe and pcv valve towards the intake manifold but try and blow the other way(intake to chamber) and i cant get a sinlge breath through.
Is this correct or does it sound like the valve is knackered?

Thanks again

Yes the valve rattles.

The valve is in the direction that....when i blow from the intake end i can only just blow a small amount of air through it.
From the chamber end i can blow cleanly through

????

Thanks

Originally Posted by Brian R.
No, don't remove your PCV valve. One critical function of the PCV valve is to prevent backfiring flame from getting back into the crankcase. ...

This is exactly correct. The PCV valve is actually a check valve. It allows a calibrated amount of vacuum through the valve in one direction to ventillate the crankcase. The check valve stops induction, (intake backfire) from entering the crankcase.



Doesn't electronic timing totally prevent that anyway???

The plug for a particular cylinder can't fire, except for when the intake is closed. Right???


If valve timing and ignition timing are correct, the intake and exhaust valves are both closed when the spark plug fires.

With both hoses disconnected from the chamber i started the engine and both holes seemed to be sucking in air.
Is this correct

Surely the left hole should blow the gases towards the pcv valve then be sucked from the pcv valve to the manifold????

The PCV system has two hoses. One end of the fresh air inlet hose is located in the rocker arm cover, usually in a rubber grommet. The opposite end must have a filter, possibly using the air filter, or may have one of its own. The second hose is also located in the rocker arm cover and the PCV valve is located in that hose. The valve usually connects directly to the rocker arm cover in a rubber grommet. The opposite end of that hose is connected to intake manifold vacuum. If the engine is a V6 or V8, the hoses are in opposite rocker arm covers which forces PCV air flow through the crankcase. If it's a 4 cylinder, the hoses are usually located at each end of the rocker arm cover. A divider inside the rocker arm cover forces PCV airflow through the crankcase. The PCV valve has a check valve built into it, that's why it's called a valve. As mentioned in post #236, the valve stops induction pressure, (and sparks/flame if any), from entering the crankcase. The valve allows a calibrated amount of vacuum through it. The connection on the intake manifold draws an equal amount of vacuum from each cylinder so each cylinder receives the same amount of crankcase gasses reducing the possibility of a miss fire.

If the PCV system is operating correctly, there should be a slight negative pressure on the inlet hose while the engine is idling. If the valve is stuck open when induction occurs, the normal slight negative pressure in the crankcase is changed to a positive pressure. When this happens, it pushes gaskets and seals out and creates oil leaks. When idling, if the PCV inlet hose is restricted, the opposite occurs: the normal slight negative pressure increases and sucks gaskets and seals in creating oil leaks. If the PCV valve is stuck closed, or there is no vacuum to the valve, blow by pressure will force the gasses out of the inlet hose and clog the filter with oil vapor, which when cooled, turns back to liquid oil or sludge.

I happened upon this thread, and after reading a few of the entries I have to speak up...This is another of what appears to be an "urban legend" that has gone way out of control. I'm surprised the instigator of this nonsense hasn't also declared an increase in gas mileage of 50%.

If the function of the PCV (Postitive Crankcase Ventilation) system were understood, then you would expect to find an accumulation of oil in the catch jar after a period of time. The function of the PCV system was/is intended to recycle unburned blowby (i.e. oil and fuel vapors) back through the intake system, rather than venting them overboard into the atmosphere. The sole intention is to reduce emissions into the air we breathe.

Therefore, it is entirely normal for any engine to accumulate a measure of oil over a period of time. That amount being totally dependent upon the condition of the cylinders, piston rings, etc.

So, if it makes you feel like you're getting quicker accelleration, better mileage, smoother ride, or better looking, go ahead. It won't hurt anything. But wise up to the fact that the collection of oil by filtering it out of the PCV flow system, is no big thing.:dupe:

had a buddy rig his own system ,,yes he has blow-by and oil burning,,,well it has cut his use in half ,,, i was joking with him and told him to pour what was in the trap back in and he said no way,,i said if it doesn't smell like fuel way not it was inside before :grinyes: