Unless it's part of this hose... http://www.realoem.com/bmw/showparts...15&hg=11&fg=15

 

No, the hose is just a hose. It really is in the cylinder head cover.

Dave

 

Neither of the parts you are talking about are "in" the cylinder head.


EDIT: Sorry ignore that I read the post wrong. I was thinking the head not the valve cover which I think it was what yu meant to say.

 

You can cap off that hose on the second link made by Benibiker.

 

I did read on totalmini.com that someone had the whole valve cover replaced due to PCV issues and excessive oil consumption. Terrible design, every other car has the little PCV as a single replaceable unit.

 

guys can someone make clear in simple English with as less tech names as possible what exactly is described here cause i have no tech knowledge and little english

 

The cylinder head cover is the black plastic thing on the top of the engine, with the MINI emblem on it. The PCV valve is part of it.

http://www.realoem.com/bmw/showparts...14&hg=11&fg=15

Dave

 

and the pcv is responsible for the oil burning? why was the hose replaced?

 

Another non-oil burning MINI owner here. I have to admit I had a bit of non-advised fun during the break-in period. That could have something to do with it or... I got a good one.

 

PCV- Positive Crank Ventilation. It is a system which vents gases that get by the pistons in the cylinder during combustion, aka blow by. It happens on all cars new or used, never driven on or 1 million miles basically it just happens. In older cars pre PCV the blow by would just leak out of all the seals. It used to be considered normal for a car to leak a steady drip of oil. The first attempt to correct this was a vent that vent underneath the car that caused the roads to have oil down the center of the lane. Once realizing that this was bad for the enviroment the PCV system was installed which basically recirulates the blow by in a car. With this blow by it happens to pick up oil, water, and othe hydrocarbons and that is why you get that crude in your intake system. Over time the system tends to get clogged which can lead to poor gas mileage and excess oil consumption. This is how I understand the PCV and this is by no stretch an actual tech that is giving you this info but, none-the-less I hope it helps you understand what the PCV system is and what it is for.

 

Thanx Porthos now i believe i understand it, and regarding the link, why did those guys block it?

 

They block it and put an oil catch can on the other PCV line. MINIs have two PCV lines, one going directly to the intake manifold and the other to the turbocharger intake. The "S" and JCW engines are direct injected, that is, the fuel is injected right into the combustion space, instead of into the intake runner upstream of the intake valves, as on most fuel injected engines.

Because there is oil mist in the crankcase fumes that is directed back through the engine by the PCV system, that oil mist will stick to the back part of the intake valves. On most fuel injected cars, that oil is washed off by the fuel that is injected just upstream of the intake valves. On direct injected engine, the oil just stays on the back of the intake valve and burns, leaving carbon residue behind. That carbon residue slowly builds up until it chokes off the intake port, causing loss of power and drivability problems. The dealer has an expensive method of cleaning the carbon off of the back of the intake valves with ground walnut shells and compressed air.

If the PCV hose to the intake manifold is blocked off, all of the crankcase fumes will be directed through the other PCV hose to the turbocharger. An Oil Catch Can is installed in that line to keep the oil in crankcase fumes out of the turbocharger and intercooler.

That way, no oil mist will bake on the backs of the intake valves and the intake ports will not need to be de-carbonized later.

Dave

 

Nicely said Dave

 

Thank you for explaining to a relatively new MINI owner in a very clear way why I need an oil can!

 

I’ve got almost 50K miles on mine and though I don’t abuse it, I track it a LOT. I broke it in like Motoman suggests on their website.

At almost 50K miles, I have never had to add any oil between changes. (every 5K synthetic)

Just out of curiosity, for those of you that are adding oil, are you going by BMW’s recommended oil change intervals of approx. every 18K miles??

Mark

 

That's an oxymoron

 

I was trying to be politically correct...LOL.




Mark

 

No

Change oil every 3-4k miles. Using BMW approved LL01 spec oils only such as BMW Oil (from the dealer), Mobil 1 0W-40, Castrol Syntec Euro formula, which ever I can find easiest. And only use MINI OEM filters.