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Old 01-21-2019, 01:14 PM   #1
Jasonkirrane
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Vaccum leak codes

Did a smoke test and found smoke leaking from a place that's meant to have a vacumm hose I assume as loads of smoke bellowing out but don't seem to see a hose to put on it. Any ideas conversion to a 325 so wonder was pipe not put in.photo attached of pipe it's at back of engine under where micro filter is behind where intake boot.
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Old 03-01-2019, 05:26 PM   #2
Superkeith76
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There's a vacuum cap that goes there. There's also 2 smaller ports back there. If there's a valve on the back of the intake next to it then it should hook up to the smaller port if not just cap them off
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Old 03-01-2019, 05:53 PM   #3
Ettinger
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You are missing a cap. Secondary air issues are discussed here. If these vacuum lines are original, replace them:
https://forum.e46fanatics.com/showthread.php?t=1246105
https://blog.bavauto.com/12072/bmw-s...to-diy-obd-ii/
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