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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Pinched Vacuum Line??



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      08-11-2014, 12:11 PM   #1
iaknown
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Pinched Vacuum Line??

OK guys, when working on my car I discovered a vacuum line under the drivers side engine subframe. Wierd thing is the strengthening brace that bolts right below the subframe has it totally pinched. Does anyone see this on their car and is it routed here? My car has low miles and I've never messed with removing this so I'm a bit stumped....
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      08-11-2014, 12:39 PM   #2
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Saw that on mine as well, it goes to the engine mounts --- I'm assuming they have some sort of pneumatic function?
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      08-11-2014, 12:51 PM   #3
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+1, I saw these lines routed to both mounts. I reconnected the passenger line after it was reinstalled. I see a gap of some sort above the black bar in first photo. I recall mine running in close quarters on both sides but never smashed or pinched. I need to get back under there for another reason but it wouldn't be until this weekend. Hope someone else can look before then. I'm thinking it is just needs a push outboard some to go into the cavity I see. Good luck
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      08-11-2014, 01:33 PM   #4
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I read somewhere that the diesel motor mounts soften when cold to minimize vibration or something along the lines of that.
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      08-11-2014, 02:00 PM   #5
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they probably soften under idle and stiffen up when RPMs increase. Pretty typical in newer cars to have adjustable mounts
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      08-11-2014, 09:45 PM   #6
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Saw that on mine but it was not pinched. It's a tight squeeze but definitely free to move.
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      08-11-2014, 11:13 PM   #7
iaknown
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Very interesting. Will check the routing on mine again...thanks everyone.
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