Oil Catch Can, Eliminate that knock!

I unplugged the small hose from PCV to intake and noticed it was oily like accumulating! So I Decided to just go ahead and do the OCC......................(per DENLATU )...........
today as long as wipers were off and air box... went on scavenger hunt at pull u parts and found an clean power steering reservoir and hoses that grabbed my eye. Paid the man and worked design. Unplugged PCV and ran hose. Connected other hose to intake
Plugged cap with cork for now to avoid vacuum leak! I'll most likely use rubber stopper later.
Seems right? Turned upside down to position for draining and vacuum... we shall see...fingers crossed ... thanks DENLATU

 

I meant "DANLATU" ...apologies

However, wondering if I should move it lower? It's a long way to OCC in current location.
Perhaps below snorkel resonators? Plenty of room down there.
Allow oily to move away from PVC and down into OCC?

 

Basically that was my thinking on where mine got mounted. Wanted the occ to be lower than the pcv and the intake. Remove the snorkel and look at all the space under it. Zip tie it under there. You can even mount it in such a way that it can be checked every oil change from the flap underneath.

Btw love your creativity of scrounging at a pick and pull to find something to make your own. Two big thumbs up.

 

Thanks
I'm on it!
The great thing is the hoses I grabbed have bends in them so it's just about finding the right position

 

Well seems to workout just fine
The hoses really wanted to cooperate and just fell into place. The reservoir also found a sweet spot. Just lodged itself. Might zip tie...in case I pull General Lee over a train crossing

 

I ran brakes to almost Toyota minimum which is pretty darn low! I think 1mm? Mine were at 3mm.
Scary low by gauge. Nonetheless it was 171k when I changed mine. Front wore but the back are right at 50%. I left them on since dealer was out anyway...
I haven't had any rattle since Mod and I've ran nearly 100 miles intentionally daily to get a good cold start in the morning and it's not rattling.
It had just begun to rattle and I immediately parked it when I began to hear it, until I could figure something out, before damaging the engine. One mechanic friend heard it and said it was nothing but us PRI know our vehicles! 185k and you know when something's not right! So I researched and went ahead and did the intake cleaning along with throttle body, egr/cooler, and the infamous OCC (kudos to DANLATU and his adamant findings) and just went ahead knocked it all out!
Thanks to all of PriusChat community for input...so far I am a believer! My advise: JUST DO IT! don't wait till problems start!
Toyota really missed a beat.., it happens I guess even to the the best!

 

About 76.5k miles on my Prius---more than some Prii have when they begin serious oil-guzzling, but less than the median (~105k, I've read). As previously noted, it consumes extremely little oil overall, so far, so I can't see how a catch can could accomplish much. I take it you don't subscribe to the conventional theory that excessive oil consumption by these engines is caused by coking of the piston rings, ring grooves, drain holes, etc., just as in several other older Toyota engine families?

Yes, my Mazda's engine had pretty much "original everything," as far as oily metal bits subject to wear. However, it did receive a head transplant at 476,402 miles due to erosion of head coolant passages.

Sorry 'bout my delay responding. (Access to PriusChat has become inconvenient.)

 

What do you think causes the "coking of the piston rings, ring grooves, drain holes, etc"? If you don't know, you need to take out your intake manifold and have a good look at it. You'll see a gluey mess that's a mixture of soot + oil.

All methods for removing carbon from automotive parts with chemicals involve some way to dissolve oil.

What do you think might happen when the piston rings coke and cause oil consumption? More blow-by through the PCV leading to more coking of the combustion chambers and intake.

It's a vicious cycle a.k.a a bomb.

danlatu's catch can is meant to snuff out the bomb's fuse.

 

That gooy mess is getting sucked up into combustion chambers no doubt in my mind. When I took off intake besides being "full" of oil in the small useless "catch" Toyota put below throttle body, there was oily everywhere throughout the intake and there was that same "gooy"oil on valves waiting to get sucked in and cause misfire or worse! There was also "coking" all around inside head too. Some pretty serious stuff. I didn't have air to blow it out after cleaning so I left the cleaning for a later date but I plan on cleaning it as much as possible. I realy donot want to see inside combustion chambers!
The Prius is not using oil at 185k. I change at 10k and it may be 1pint low. Usually appears that level at 8k however, I do check weekly as precaution. It's not a big deal to install. Just reach in and swap hoses.
I drive an MX-5 for fun and I might do the OCC mod on it. It has 79k. Revs high all the time. Surely spitting oily air through hoses too. Maybe on all my vehicles? The Previa has 295k and sees long trips. It has that engine pancaked under the seats. Pretty hot down there, and the FJ has 135k and well, likes to be driven.

 

To anyone doing the intake manifold and EGR system cleaning + PCV catch can please post your before & after fuel economy results for the naysayers. We could start a new thread under the fuel economy forum.

For those curious I'm at a 57 MPG indicated average and I do mostly short trips with A/C around town. I've always used regular gas. My workplace is 4 miles from home.

Pixel XL ?

 

I have some old (but in very good shape) washing machine water supply hose. Has 3/8" I.D. Possible to use with oil catch can? Not sure if it would be oil resistant.

 

Since I added the occ and put in new plugs I've experienced no change in fuel economy. But it has been very hot here in the southeast and ac has been run wide open and eco mode turned off. Maybe that's an increase. I don't know. But the car has ran smoother and seat of the pants it feels more responsive. Placebo effect? Possibly. Time and miles will yield more answers.

 

It might be too early to respond or pinpoint the root, but after doing the throttle cleaning, EGR pipe/cooler cleaning , installing OCC, and the new 12v battery, my gas mileage is definitely improving. There's probably still oily in route?... I used to be ecstatic when I'd do a little tune up work and see a 50 MPG when I arrived after trips...just to see an improvement was great feeling back then. Now I'm seeing 52.1 and better and haven't changed driving habits. I'm beginning to miss the ole 48's and 49' almost 50 feelings, but I'll take it any day! ...the engine starts smooth and responds great. I think the HV Battery likes the changes too!

 

It's not so much the gas mileage with me as the vehicle itself. Meaning, a vehicle built by Toyota is a vehicle that's capable of lasting 20+ years to me! This little hiccup ( oil out of PCV into intake into valves into combustion chamber...into EGR...) can be a catestrophic disaster to my Prius! as great and awesome of a car that it is I'm sure it was built to last! I hope Toyota stands behind their name and quality and do something to help remedy this. They don't have a problem selling cars but issues as this can and will hurt loyal buyers. Allot of people like new cars, I buy the brand because it's the best! Especially the PRIUS... a reputations at stake!
I do loves a big Ford too! Built tough

 

Sometimes hose has a part number printed on it. Maybe you can google the specs.

 

Reposting into relevant thread

There are lots of examples on the internet of how an EGR system affects different car models and the results are the same. Just google "EGR cooler plugged". Although the EGR system is good for emissions and fuel economy it puts deposits on the intake manifold, valves, and EGR cooler. Here is another EGR evangelist proselytizing owners to clean the intake manifold and EGR system and also install a PCV oil catch can:

"The clogging problem that older cars have doesn't seem occur on newer cars as much for a number of reasons: ultra low sulfur diesel fuel, more precise fuel delivery and burn, better oil separators in the PCV, and new EGR systems all reduce the likelihood of clogging"

The '95 Saturn SL2 that I owned had lots of sludge problems, oil burning problems, and it had PCV and EGR systems. I installed a PCV oil catch can and it helped prevent the clogged intake manifold common to that car.

The '07 Saturn Ion I drove was problem free and had no related issues for the life of the car. The aluminum engine ran higher compression but did not have either PCV or EGR systems.