E63/64 DIY: BMW 2005 645Ci / E63 / Crank Case Vent Valves CCV - Page 2 - Bimmerfest - BMW Forums

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Old 07-26-2013, 04:23 AM
jeremyp jeremyp is offline
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Location: NH
Join Date: Oct 2012
Posts: 66
Mein Auto: 2005 545i Sport
feszty, There's a few other things to try that have worked for others.

Try a Seafoam treatment to clean the intake. Get the spray can that comes with a curved spray hose that directs the Seafoam into the throttle body. It's very effective at cleaning out the buildup in the air intake as well as the carbon buildup on top of the pistons. Both of these issues cause smoking problems.
You can also try the two fixes mentioned in a thread on 5series dot net. I'm not sure if I can cross link a thread to another forum here but go to 5series dot net and search for a thread titled '545i Dual Catch Can setup with pics' started by AllBlackBMW. He used a dual catch can setup to trap the excess oil that otherwise would have made it into the intake. It cured his smoking problem. Also take a look at the fix posted in the same thread by A B Able Truck. He cured his smoking issue with his fix.

I fixed my CCV diaphragms and while one was torn almost all the way around the outer diameter, I didn't have any smoking problems. I used the new caps without air nibs, pulled out the air tubes and blocked off the air nib on the main air intake tube going into the throttle body. I bought a can of Seafoam but haven't used it yet. My intake wasn't that bad but I do want to give it a good cleaning. As preventive maintenance I also use a bottle of Techron at every 3-4 fillups to keep things clean.

Hope this helps.

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Last edited by jeremyp; 07-26-2013 at 04:24 AM.
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Old 07-26-2013, 04:01 PM
feszty feszty is offline
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Location: Houston, Texas
Join Date: Jul 2013
Posts: 5
Mein Auto: 2006 BMW 650i E63
Thank you, jeremyp! I will try the Seafoam and go from there. I need to find the best entry point. I will try to get it documented and I will post the result. Cheers
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Old 08-17-2013, 06:51 PM
slemmer slemmer is offline
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Location: mississauga
Join Date: Jul 2003
Posts: 42
Mein Auto: '04 645cic '00 740i Sport
I definitely have a gremlin that's taxing my brain. To date - CCVs and TB gaskets replaced; vacuum hoses from CCV to MAF replaced and the darn increased emissions warning still lights. I picked up a Technic cable/software and it reports a 27D5 Idle-speed control faulty message. Does the e64 have a ICV and where is it located? I thought the CCV replaced the ICV. Car drives fine except for minor cold idle fluctuations. I'm worried that I won't be in a position to pass my emissions test this year. Thanks. Stephen,
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Old 08-17-2013, 10:31 PM
hugo_za hugo_za is offline
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Location: Auckland, New Zealand
Join Date: Mar 2013
Posts: 254
Mein Auto: F12 650i
DIY: BMW 2005 645Ci / E63 / Crank Case Vent Valves CCV

Worth checking out the engine suspension. I replaced the Valves and thermo but the rough idle persisted. Turned out to be one of the engine support arms had snapped. It was replaced with the rest of the front suspension and the rough isle is no more.

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Old 05-04-2014, 11:25 AM
kmgrady01 kmgrady01 is offline
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Location: Sammamish,WA
Join Date: Jun 2013
Posts: 282
Mein Auto: 2005 645ci convertible
Some clarification on old Caps with hoses and new without. You do not need to reuse the old caps and keep the hoses. Disconnect the hoses from the old caps and the intake pipe. Cap off the connection to the intake with a vacuum cap that has an inside diameter of 5/32. The original hose has a 3/16 inside diameter, but the 5/32 vacuum cap fits with a nice tight fit.
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Old 01-17-2015, 12:55 PM
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Location: Georgia
Join Date: Nov 2014
Posts: 38
Mein Auto: BMW 428i

Great information here. The dealership wanted 179.00 to replace ccv vlaves. Will replace myself.

Last edited by MySILBERGRAU645; 04-08-2015 at 04:45 AM.
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Old 04-07-2015, 04:41 PM
Loquacious Loquacious is offline
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Location: Bham/Bama
Join Date: Jan 2015
Posts: 27
Mein Auto: 2005 645CI
Bump, there are a few on here that deserve stickies
That's not an oil leak, my car is marking its territory
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Old 08-12-2019, 03:56 PM
terrapinsmdb terrapinsmdb is offline
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Location: Kingston
Join Date: Apr 2018
Posts: 22
Mein Auto: 2009 BMW 650i
Wow you guys are smarter then you look! Lol kidding of course. Took the top off today and look what I found in 20mins thanks guys, hope this helps!

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Old 08-23-2019, 01:33 PM
terrapinsmdb terrapinsmdb is offline
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Location: Kingston
Join Date: Apr 2018
Posts: 22
Mein Auto: 2009 BMW 650i
I ordered 2 from the dealership because my mechanic won't let me put any Chinese crap on my car. They're $50.00 each from dealership. So ordered 2 ($100.00) as I let the assembly soak in water for a couple hours. He told me the hosing of the assembly is probably brittle and the whole thing would need to be replaced. As I was cleaning it, it just shattered to pieces. I ordered the whole assembly which comes with 1 diaphragm for $23 on Pelican Parts. Their are diaphragms on eBay for 6.99 for the pair. Anyway went to dealership to pickup my German parts. The BMW logo was on the packaging and so was "Made in Czech Republic". So who knows

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