DIY Solution to M54-M52TU CCV problems

[Steff 320i]

Great thread. I just bypassed my CCV a few days ago, sticking to the instruction of the initial post. Everything went fine. The only thing is: I'm getting a strong smell of burnt oil inside the car once in a while. Not always, just after high revs. Smells like someone was grilling chicken inside the car.
It's an E46 320i convertible, M54 engine.

[bcredliner]

Originally Posted by Steff 320i

Great thread. I just bypassed my CCV a few days ago, sticking to the instruction of the initial post. Everything went fine. The only thing is: I'm getting a strong smell of burnt oil inside the car once in a while. Not always, just after high revs. Smells like someone was grilling chicken inside the car.
It's an E46 320i convertible, M54 engine.

That's the potential downside when the CCV is removed. and when the engine RPM returns to an idle after reving one of the highest likely circumstances to generate your symptom. FYI- I think if stop grilling chicken with burning motor oil it will taste much better.

[richardb]

Here's a quick video I made showing a bad CCV for diagnosis, check it out. Functioning CCV should have no strong suction like you see in the video. Defective valve and or blocked dip stick tube can create excess pressure like shown here:

[Sroor9001]

Just did this today as I got low idle cause of broken plastic hoses if ccv valve so that's easier than ccv valve and easier to replace and if I get better mileage and get rid of carbon on my exhaust it'll be better yes

[Steff 320i]

I guess the smell of burnt oil which I reported earlier had nothing to do with my CCV mod. I replaced the valve cover gasket a week before the CCV modification, I guess there's a light oil leak somewhere, not related to the CCV.

There's a guy on Youtube, Eric the Car Guy, who says that if your car burns a lot of oil and you do this CCV mod, the car will need a couple of hundred miles to burn off the remains of the oil that were in the intake and other parts. May be true as well.

[Sroor9001]

I've done this

[80stech]

The CCV regulates flow to maintain a certain level of vacuum in the crankcase while the PCV just regulates (basically 2 positions) flow according to how much vacuum(level) is in the intake manifold. Completely different. Plus the CCV also uses a cyclone to seperate the water (and oil) droplets and return them to the crankcase.

[cn90]

Sorry I didn't make myself clear.

I know exactly what PCV and CCV mean. But that was not my question.

I am ONLY interested in long-term report: after some 5000-10,000 miles AFTER doing this mod by BavarianE39, what is the oil consumption BEFORE and AFTER the mod. If people can post the following info, it'd be great:

- Year/Model/Trans/Mileage (example: 2006 X5 M54 6spMT with 122K miles).

- Oil consumption BEFORE mod = _________

- Oil consumption AFTER mod = _________

[Sroor9001]

See this thread

http://www.bimmerforums.com/forum/sh...umption-Solved

[Sroor9001]

And this thread who has done it first
Long back
http://www.bimmerforums.com/forum/sh...tal-in-10-mins!!!