Intake manifold removal for vacuum leaks

[Kohler00]

So I've pulled the intake on my 2004 325i to fix the CCV and replace any vacuum lines that need replacing. Once I got the intake out I realised there's no vacuum lines running off the back like there usually is, it's all capped off. Should there be vacuum lines?

Thanks!

-Kohler

Sent from my SM-G950U using Tapatalk

[X3456]

I don't know who was trying to do what? but, there is also a sensor missing as well...

Sent from my SM-J727T using Tapatalk

[Kohler00]

I don't know who was trying to do what? but, there is also a sensor missing as well...

Sent from my SM-J727T using Tapatalk

Interesting, that sensor wouldn't have any effect on a vacuum leak would it?

Sent from my SM-G950U using Tapatalk

[X3456]

Interesting, that sensor wouldn't have any effect on a vacuum leak would it?

Sent from my SM-G950U using Tapatalk

Best I know that sensor is for the exhaust.

Sent from my SM-J727T using Tapatalk

[Kohler00]

Best I know that sensor is for the exhaust.

Sent from my SM-J727T using Tapatalk

Yeah, I figured considering it's an egr sensor, I'm not gonna worry about that too much, my county doesn't do emissions, I'm more worried about vacuum leaks.

Sent from my SM-G950U using Tapatalk

[X3456]

Yeah, I figured considering it's an egr sensor, I'm not gonna worry about that too much, my county doesn't do emissions, I'm more worried about vacuum leaks.

Sent from my SM-G950U using Tapatalk

Ahh! Understood...I just like to have everything just as it was fitted from the manufacturer. Gives me a good base start when I'm trying to make adjustments and repairs.

Sent from my SM-J727T using Tapatalk

[Kohler00]

Ahh! Understood...I just like to have everything just as it was fitted from the manufacturer. Gives me a good base start when I'm trying to make adjustments and repairs.

Sent from my SM-J727T using Tapatalk

I can understand that! Trust me if I had the money the engine bay would be oem, but I'm a college student just trying to keep my car running lol.

Sent from my SM-G950U using Tapatalk

[Muzz258]

The 7 mm port is never used, always capped.

Of the two 3.5 mm ports:
- 1 is always capped. This one is often used for the 02 mod, if you have a high oil consumption.
- 1 is used for the secondary air pump. What has been called the EGR in post #2. Your BMW doesn't have an EGR valve. It looks like it does not have a secondary air pump, so this port is capped.

[Kohler00]

Well guys, after tearing apart my intake and replacing nearly everything related to vacuum she's back together and running perfect. I had a huge vacuum leak problem (AFR 18:1) and a misfire in cylinder 2. Turns out the CCV was busted and she was drinking oil pretty rapidly, causing the plug in number 2 to foul and the others were close behind. Found the culprit inside the CCV, it was the rubber diaphragm of course.

Lesson learned: CHANGE YOUR CCV!!

Sent from my SM-G950U using Tapatalk

[MIKYZZ4]

Enter your VIN# here to search your configuration from factory:https://www.realoem.com/bmw/select.d...&kind=M&arch=0