What bits do i need to replace the CCV?

ben g · Post by **ben g** » Mon Oct 09, 2017 6:24 pm

My Z4 has been drinking a bit of oil (it has done 120,000 miles) so I thought it'd be a good idea to replace the CCV.

What bits do I actually need to buy to replace it?

Also, is it an easy diy job? Planning on doing it on the driveway before the cold weather comes!

Scooba_Steve · Post by **Scooba_Steve** » Mon Oct 09, 2017 6:35 pm

The CCV, hoses and new intake manifold gaskets. Getting the manifold off is fiddly, lots of clips to release.

ben g · Post by **ben g** » Fri Oct 13, 2017 7:54 pm

Ok thanks

do the ebay kits come with everything needed or will i still need to buy extra parts?

Only asking as i don't want to get half way through the job to find i don't have everything required to finish it

Z4 Gaz · Post by **Z4 Gaz** » Fri Oct 13, 2017 8:30 pm

How much oil is it using?
From my research BMW doesn't think 1l per 1000 miles is out of the ordinary for this engine, which in my opinion is crazy, but what do I know.
There is always the 'o2pilot' mod you could try first, easy and cheap to do and doesn't require the inlet manifold to come off. I managed it without removing the throttle body, but it is a bit fiddly.

http://forum.e46fanatics.com/showthread.php?t=1115223

patriot66 · Post by **patriot66** » Fri Oct 13, 2017 8:32 pm

I fitted this CCV kit to my Zed back in April.https://rover.ebay.com/rover/0/0/0?mpre ... 2184950052 Not the cheapest available but it is a quality German made Febi Bilstein set and has all the parts you will need to do the CCV. Also replaced the inlet manifold gasket, throttle body gasket and dipstick tube O-ring whilst I was doing.

tomrdy · Post by **tomrdy** » Mon Sep 07, 2020 6:17 am

Necro'ing this thread as to not start another.

Wanted to check whether the manifold does indeed have to come off? The guide from Bavauto for the E46 seems to leave it on? I haven't had a chance to take a look yet (I will when I replace my lower intake boot), but does the E85 have some clearance issue?

https://blog.bavauto.com/5434/bmw-m54-6 ... 525i-530i/

Brouse · Post by **Brouse** » Mon Sep 07, 2020 9:53 am

Necro-ing the thread

Not sure on the e85 but on the e86 its a manifold off job.

Wookster78 · Post by **Wookster78** » Mon Sep 07, 2020 11:04 am

I have done this on my e85 and you can do in fine without removing the manifold, it’s fiddly but can be done if you remove the air box and DISA Valve unit, took about an hour all in, not too bad a job to do.

Use this video guide

https://m.youtube.com/watch?v=btggLSedkxc

Jakg · Post by **Jakg** » Mon Sep 07, 2020 12:56 pm

When I did mine, there was no way I could do it with the inlet manifold in situ.

https://www.pistonheads.com/gassing/top ... 55842&i=67

Wookster78 · Post by **Wookster78** » Mon Sep 07, 2020 1:21 pm

Jakg wrote: ↑Mon Sep 07, 2020 12:56 pm When I did mine, there was no way I could do it with the inlet manifold in situ.

No problem but it is possible as I have a 3.0i M54 and did do it with the manifold in place so it is possible, refer to the video which shows it being done on a 3 series with the same engine, procedure is the same

tomrdy · Post by **tomrdy** » Tue Sep 08, 2020 4:13 am

Wookster78 wrote: ↑Mon Sep 07, 2020 11:04 am I have done this on my e85 and you can do in fine without removing the manifold, it’s fiddly but can be done if you remove the air box and DISA Valve unit, took about an hour all in, not too bad a job to do.

Use this video guide

https://m.youtube.com/watch?v=btggLSedkxc

Thanks Wookster. I also found a video from Bav auto - seems very doable but just some touchy-feely work required.

https://www.youtube.com/watch?v=YWXtiCwRH-k

Wookster78 · Post by **Wookster78** » Tue Sep 08, 2020 7:24 am

Yeah that’s it really, probably the worst bit is connecting the vertical pipe that goes through the manifold down to the CCV but take your time and follow what he says and you soon find the right place for it to fit. Most importantly have a nice beer on hand to help you though

Chris_D · Post by **Chris_D** » Tue Sep 08, 2020 8:37 am

Replaced mine with the cold climate version as it has thicker tubing insulation.
Was fiddly as fk but not impossible.
Dipstick o-ring is important to replace too as it's a leak-point if removing the dipstick, which you will need to do.

patriot66 · Post by **patriot66** » Tue Sep 08, 2020 8:55 am

Having done this back in April '17, imo you might as well make life as easy as possible and remove the inlet manifold etc. The gaskets on the throttle body and inlet manifold WILL have 'petrified' and gone hard and brittle, possibly causing vacuum leaks etc. Also you can replace the oil filter housing gasket too. For the small amount of extra work and expense involved, and much better CCV access; it's well worth it

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Brouse · Post by **Brouse** » Tue Sep 08, 2020 10:00 am

Yea that vertical pipe was a maddening affair, had to step away and have a coffee break to calm down.

I did find that a little rubber grease helped locate it in the end.

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