Tech_Greek

Well, during all the emissions removal I believe we might have missed something, on the side of the actual oil fill tower (which is where I assume that's the part of PCV system?)

Anyway, the hose is just dangling there from the filler not connected to anything, is this going to be a vacuum leak or considered a problem?

- Tech

hondahater

iTrader: (2)

it'll let some crankcase oil vent out (and make things a little dirty), you can either run a line to your intake duct and the other to the charcoal canister, or use a catch-can/breather

NZConvertible

It's not part of the intake system so it can'r cause a vac leak.

The sump must be left open-vented. To keep oil vapours out of the engine bay. I ran two hoses from the old PCV connections (that nipple and the one on the centre housing) under the car and zip-tied them to the fuel line.

Tech_Greek

So wait, this will actually cough up oil out of that hose...yikes time to get a catch can.

NZC, When you say open vented, so you mean you actually have the hoses aimed at the ground...

From the diagrams I've been studying and reading about it seems that they do indeed run off of vacuum to suck the excess whatever out (pressure) off of the intake tract.

Aaron Cake

iTrader: (1)

You can get a PCV valve from most auto parts stores for a few dollars. Eliminates catch cans, oil messes and all that.

NZConvertible

A PCV valve doesn't remove the advantage of a catch can. Removing the oil from the air before sucking it into the engine is astill a very good idea.

Tech_Greek

If I understand correctly, a PCV is kind of like a one way check valve correct? Air is supposed to be the only thing let out (back into the air intake tract) however sometimes oil makes it past it back into the intake causing build up, etc...(my 6 ports ultimate death to that system, locked up actuators lol) and thats where the catch can comes in?

Aaron Cake

iTrader: (1)

Stock car doesn't have a catch can and it seems to work fine.

No reason not to use a catch can and PCV valve but if the stock system works then why not just stick with it? Less of a pain in the butt.

Tech_Greek

Yes, catch cans, the argument of them is great...BACK to the PCV Valve...what exactly is it like my post above said?

NZConvertible

It "works" by sucking oil vapours and combustion products into the engine. The thin layer of oil coating the intake of the intake system is testament to this. While this isn't as much of a problem for rotaries as piston engines, it's still a good idea to separate the oil out and suck only clean air though the intake system, particularly the intercooler.

The PCV (positive crankcase ventilation) valve controls the flow of gases being sucked into the engine. It's vacuum operated, and lets more gases flow at low vacuum and less at high vacuum. This stops too much entering at once and upsetting normal combustion. On FC's this is done by the purge control valve on the vac rack.

Aaron Cake

iTrader: (1)

The thin layer of oil makes the inside of the intake smooth.

Tech_Greek

Alright, so basically all my emissions are gone, and thats just a little hose hanging of the side of the oil fill tower, I now know what's making my problem of mukey ness to that area, I didn't think it would actually take oil out of the engine it self and put it out of that hose though...