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FaRKle! · 12-31-2018, 05:22 PM

CCV System and Smog Checks

I had a bit of a rude surprise when redoing my registration this year (other than the >25% increase in registration fees due to CA's new "Gas Tax") in the form of a notice saying I needed to get my car smog checked. In CA with gas cars you don't need to get a smog check for the first six years (when buying new), but I didn't realize that doesn't apply to diesel vehicles, which requires one every other year.

When I brought the car into the local smog place the tech told me I needed to remove the CCV catch can system in order to pass since CA doesn't allow any modification to the CCV/PCV system. This is kind of asinine as a catch can is even cleaner than just recycling the gunk into your intake, but that's government for you... (you can find the thread on the catch can system here).

When I first put in the catch can system I broke the original hose from the CCV outlet to the main intake pipe trying to see if it could be taken apart. Unfortunately, this is the piece I needed to be able to smog the car. Also unfortunately according to RealOEM that piece isn't sold separately, however, the diagram suggests that it should be (or that there might be an alternate part that is). Due to that I looked on the RealOEM page for the Euro 320d and was able to find the part number for the hose. It turns out that there's two versions of the hose. One which is just a straight hose connection (13717823517), and another, which also has a heating element (13718507386). The 328d stock hose has the heating element, and since mine was fine, I figured I'd buy the cheaper version with just the hose since it was about $15 vs $75 for the heating element version.

I went to my local dealer to order the 13717823517 hose, and they initially gave me a price around $30. I wasn't totally opposed to that, but asked if they could price match ECSTuning, who had it for $14 and change. The dealer said they couldn't match, but gave it to me for $15 + tax, which I was more than happy with.

13717823517 CCV Hose

When I got the hose, I noticed that the head of it was a bit different than the stock hose. It has two clamps where the original only has one (and in different locations), doesn't have a holder for the connector next to it (which doesn't matter), and doesn't stick as far out from the CCV outlet before connecting into the tube.

Stock Head Left, New Head Right

Thankfully this wasn't an issue and the head fit and clamped just fine. This is because the clamps don't lock into specific notches, but rather on a flange that goes around almost the entire circumference of the CCV outlet.

CCV Outlet

Since the hose I bought didn't have the heating element the tubular section was longer than required. I cut it down to 6.5" in length, and then inserted it into the rubber reducer/coupler piece on top of the heating element. Once everything was back together I went back to the smog shop and had no issues passing.

No Issues With New Hose

On another note, the below picture is what my catch can collected after 4000mi. I estimate the amount caught at right about (or just under) 1oz.

4000mi Catch Can Collection

12-31-2018, 05:22 PM	#36
FaRKle! Brigadier General 4012 Rep 3,538 Posts Drives: 328d Wagon, M2 Comp, i4 eD35 Join Date: Sep 2016 Location: Bay Area, CA iTrader: (4) Garage List 2023 BMW i4 eDrive 35 [0.00] 2017 BMW 328dx Wagon [0.00] 2021 BMW M2 Competi ... [0.00]	CCV System and Smog Checks I had a bit of a rude surprise when redoing my registration this year (other than the >25% increase in registration fees due to CA's new "Gas Tax") in the form of a notice saying I needed to get my car smog checked. In CA with gas cars you don't need to get a smog check for the first six years (when buying new), but I didn't realize that doesn't apply to diesel vehicles, which requires one every other year. When I brought the car into the local smog place the tech told me I needed to remove the CCV catch can system in order to pass since CA doesn't allow any modification to the CCV/PCV system. This is kind of asinine as a catch can is even cleaner than just recycling the gunk into your intake, but that's government for you... (you can find the thread on the catch can system here). When I first put in the catch can system I broke the original hose from the CCV outlet to the main intake pipe trying to see if it could be taken apart. Unfortunately, this is the piece I needed to be able to smog the car. Also unfortunately according to RealOEM that piece isn't sold separately, however, the diagram suggests that it should be (or that there might be an alternate part that is). Due to that I looked on the RealOEM page for the Euro 320d and was able to find the part number for the hose. It turns out that there's two versions of the hose. One which is just a straight hose connection (13717823517), and another, which also has a heating element (13718507386). The 328d stock hose has the heating element, and since mine was fine, I figured I'd buy the cheaper version with just the hose since it was about $15 vs $75 for the heating element version. I went to my local dealer to order the 13717823517 hose, and they initially gave me a price around $30. I wasn't totally opposed to that, but asked if they could price match ECSTuning, who had it for $14 and change. The dealer said they couldn't match, but gave it to me for $15 + tax, which I was more than happy with. 13717823517 CCV Hose When I got the hose, I noticed that the head of it was a bit different than the stock hose. It has two clamps where the original only has one (and in different locations), doesn't have a holder for the connector next to it (which doesn't matter), and doesn't stick as far out from the CCV outlet before connecting into the tube. Stock Head Left, New Head Right Thankfully this wasn't an issue and the head fit and clamped just fine. This is because the clamps don't lock into specific notches, but rather on a flange that goes around almost the entire circumference of the CCV outlet. CCV Outlet Since the hose I bought didn't have the heating element the tubular section was longer than required. I cut it down to 6.5" in length, and then inserted it into the rubber reducer/coupler piece on top of the heating element. Once everything was back together I went back to the smog shop and had no issues passing. No Issues With New Hose On another note, the below picture is what my catch can collected after 4000mi. I estimate the amount caught at right about (or just under) 1oz. 4000mi Catch Can Collection Last edited by FaRKle!; 07-03-2019 at 12:39 AM..
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