chitownbluEG

This is a true testament to you live and you Learn. I got my first civic recently and while doing some misc. Replacement parts (headlights, misc. Fuses, replacing radiator hoses/clamps, etc) I had noticed that my ruber hose, going from my valve cover to the intake, was cracked. Needless to say I figured just throw a breather on it... (not the only one, looks nice.. engine candy) so I did..

I then proceded to drive around. Well in the coming days I noticed a smell, a very peculiar Smell, one that means nothing but "f**k". Oil.. I had started burning oil. I asummed that I roached my valve seals or rings. I do beat on it ALOT. (very well could have, have not completely fixed this)

I started reading about why Hondas burn oil and came across some Intel that might help alot of you out. Its called a Positive Crankcase Ventilation System. Our motors need the line from the intake to the valve cover for proper engine pressure ventilation. Unlike other cars Ive worked on where a breather is acceptable, honda has engineered a different system where instead of "negitive" pressure going into our valve cover, we have "positive" pressure going into our valve cover supplied by the incoming air inside the intake. If you want to look up the exact details and operation of our pcv system, feel free.

This is just a quick heads up to anyone burning oil. Before freaking out and tearing your car apart, replace a commonly overlooked and known to fail part. The pcv valves in our cars recycle the air vented from our engines into our intake manifolds, if gunk and sludge have built up in the valve, it will allow a more than normal amount of oil vapor to escape into our intake manifolds. Coupled with the fact that a breather does not provide positive crankcase pressure, you could have a much smaller problem and far simpler/cheaper fix.

REGUARDLESS OF WHAT A MANUAL SAYS, 1 QUART OF OIL EVERY 1000 MILES IS NOT A GOOD THING. Im not guaranteeing That you 300000 mile honda has good rings or valve seals, im just simply giving a heads up to anyone who has made a similar mistake. Just because your friends srt4 has a cool breather filter does not mean it will work on a honda. We have a diffrent system. Change your pcv and replace the line running from your valve cover to your intake and take it from there.

I am not a scientist or a master mechanic, so I cannot give you the equation the honda engineers came up with. Just a greesemonkey with a little bit of common sence.

doctorake

Please edit that post with some paragraphs, it is very difficult to read.

kyden

Hi. paragraphs. no one is going to read a wall of words.

chitownbluEG

http://www.agcoauto.com/content/news/p2_articleid/197 and because I am lazy here is a great source of information reguarding PCV valves. Just remember honda is a little diffrent from other manufacturers. YMMV

chitownbluEG

Oh im sorry. Im new to forums. Gimme a sec

B serious

iTrader: (1)

I'm sure someone will appreciate your tips, OP.

A few things:
-The PCV cleaning/replacement as a way to curb oil consumption has been around.
-Always buy a OE Honda PCV valve. Aftermarket ones don't seem to work out.
-1qt. Every 3k miles is perfectly acceptable and probably lower than expected for a lot of DOHC VTEC engines. Welcome to Honda. A high RPM engine with high crank case pressure and oil cooled pistons is going to mean SOME consumption. Especially when considering that some of these engines that still run incredibly strong today have been around for 20+ years.

If you were to buy a JDM swap that had been in a 1995 car with "30k" miles and the old, used oil has hardened up valve seals or clogged a PCV valve, you'll see some oil burn off.

But...nevertheless.....your post is helpful. Respekt.

chitownbluEG

Thanks man, I was just posting that because im new to the Hondas. Alot of people dont know much and oil burn is not a good thing. I posted the link because I didnt feel like explaining everything about pcv valves. Just its a common problem and usually overlooked. You can clean them with break clean/ carb clean.. But I would rather spend 20$ for a new oem one. Auto zone ones are junk. It took me forever to read n piece together information about this. Figured it would be helpful if it was all rolled into one with a good link to information.

chitownbluEG

I called 3 dealers to ask questions and 2 out of the 3 said "yea burning 1 quart every 1000 miles is ok".. When CLEARLY that means somthing is wrong.

B serious

iTrader: (1)

Depends on the age of the motor and what kind of motor it is. It's within Honda/Acura specs...but...it's on the borderline of "WTF".

I guess "normal" is a relative term.

My ITR would burn a quart every 1k. 240 PSI compression with no variation and new PCV valve. Instead of whining and going insane, I just added oil like a normal human being.

chitownbluEG

I guess. Valve seals most likey, but the oil rings somtimes stick or go bad and a compression test dosent always tell the whole story.

Reguardless I just hate smelling burnt oil. Lol I went to dinner with my fiance and my waitress asked me why I smelt like burnt oil.. I said I drive a honda haha. Even gucci cant cover burnt oil..

chitownbluEG

1qt every 1000 miles is like.. 1 qt a week.. For me atleast. Dosent seem right lol. Cant be good for the plugs, my exhaust, my lungs or the polar bears up there in antartica. But f**k it, why? Because race car.

kyden

sadly, 1 quart in 1000 miles is acceptable range for a lot of manufacturers.

chitownbluEG

Yea because they dont want Fix the issue. As far as I know.. Theres really only 5 ways oil gets in the combustion chamber.. Bad oil ring/blow by, bad head gasket in a (OHV motor), bad valve seals, bad pcv, or if you have a 2 smoke and mix/inject it. And im pretty certain My honda isnt a 2 smoke... Lol

chitownbluEG

Although I could be wrong, my cr250 smoked less than this thing... So lol xD and I only have like 60,000 legit Org. Miles on my motor.

kyden

Common points on a b series actually isn't the pcv valve. It's either bad valve guides or stuck oil control rings. That's pretty much it.

tony_2018

You drive 1k miles a week?

chitownbluEG

Just about. Probably 80-100 miles round trip to work, not including lunch/errands.. N then alot of driving doing stuff on the weekend, that could be 10-500.. Last weekend I put over 600 miles on my car.

chitownbluEG

Well, the tech at Joe rizza acura of Orland park, il, built tons of theese. He said more than not they would assume the rings or valve seals were shot, n it would be the pcv valve. He explained the whole system to me and exactly how it work and why it works. I had installed a breather filter which doesnt give positive pressure to the crank case, which caused blow by. But thats besides the point. The pcv system is important and the pcv valves go bad ALL the time, which is why I posted this. Its a commonly forgotten issue, that could be a cheap easy fix. Thats all

tony_2018

I have to say, I think my oil control rings were stuck on my b20b. I used Marvel mystery oil to break them loose and afterwards I never lost oil when going pass 5k rpm. It was indeed a mystery that was solved.

chitownbluEG

I heard that, I also heard from a mech. At acura to use somthing from GM that you put down into your cylinders and let sit for a couple of hours, cover it with a rag and crank it. He said they had a 3.0 Toyota that was smoking bad even after having the heads and valves rebuilt, still smoked and it fixed it. Idk what it was called... Or if id wanna put anything from GM near my honda lmao. Also heard that running 1/2-2 qts of ATF in your oil for a couole hundred miles will act as a detergent.. But Idk about that either.

chitownbluEG

And after changing my pcv with a genuine honda oem part, it actually stoped all oil burning... So.. Lol but I used to be able to smell the oil burning... Driving my car any where made me smell like I just rode a 87 yz lmao. Hated it. Now all I smell is the premium on backfire. Which is ALOT better. For me, changing my pcv made a WORLD of difference. I havent even burn a noticable amount. Except now my speedo took a ****, or my vss... And I cant hit vtec

CX-Adam

Exact Details here: https://honda-tech.com/forums/forced-induction-16/official-crankcase-evacuation-thread-turbo-hondas-pcv-catchcan-1199935/

and here: https://honda-tech.com/forums/forced-induction-16/tests-pcv-system-how-honda-intended-697498/

I thought this post was wrong so I pulled out my integra service manual. He's correct and that would explain why none of the more knowledgeable posters have chimed in yet. The service manual shows a diagram of the arrangement and the hose from the intake piping to the valve cover has arrows pointing towards the valve cover.

So, unless you're boosted, keep that hose connected.

chitownbluEG

Thats why I said mostly stock lol.. But my pcv was soaked in oil on the outlet side, changed it, beat the **** outa it and hasnt burnt a drop. Drove a 150 mile road trip at 90+ the whole n ran great. Now my question is, I have a random hose coming out of a sensor ontop of my intake manifold that wasnt connected to anyting and am having a helll of a time finding out anything about it.

chitownbluEG

Actually, Nvm. Upon furthor reading I figured it out.