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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-13-2012, 12:18 PM   #1
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Join Date: Oct 2005
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My Ride: 04 330ci 6spd
Coolant leak (pics)

My car has developed a moderate coolant leak, maybe a week, week and a half before the low coolant warning comes on. I just took it for a drive and snapped some pics of the underneath where I see some coolant pooling. These pics are underneath the car near the back of the engine. Any ideas where this leak is coming from?
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Old 10-13-2012, 01:01 PM   #2
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You're going to have to take the cover off and have a look. Almost any of the things that can leak will leak onto the cover and show up where you picture.
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Old 10-13-2012, 01:33 PM   #3
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the Expansion Tank are usually the ones that break. check for cracks, and you might want to do a complete cooling overhaul if it hasn't been done..
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