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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 07-27-2014, 08:08 PM   #1
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Expansion tank leak or radiator end cap?

Or both?
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Old 07-28-2014, 12:53 PM   #2
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Yes, it's the ET, end cap, or both. Unfortunately because a small leak can sometimes spray coolant which will dry in a location that it didn't come from it's really hard to say for sure. The best way to know is to clean the area up really well, start the car, and when it warms up see if you can spot where the water is actually coming from as it happens.
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cooling, expansion, leak, radiator

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