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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 06-09-2011, 06:46 AM   #1
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Join Date: Nov 2010
Location: Baltimore
Posts: 1,451
My Ride: '01 325xi, '90 325iC
Lost engine block drain plug!

Hah so I finally got that sucker off to drain the coolant from the engine block Into a bucket, and when I looked into the bucket afterwards only the crush washer was there!

I think the pressure of the coolant propelled my drain plug into the under body of the war somewhere! I couldn't it find it on the ground anywhere. I searched but couldnt find anything. I remember there was post similar to this where the person located where it was lodged/resting in their car. Does anyone remember or know?

Also, can I reuse the crush washer? And also where are there o rings in the cooling system? I'm replacing my radiator and lower radiator hose. Do I have to worry about o rings?

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Old 06-10-2011, 09:22 PM   #2
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Join Date: Jun 2004
Location: NC
Posts: 497
My Ride: e36,e46,e90
My drain plug has fallen and landed on top of the motor mount arm. You might get away with reusing the crush washer but they are like $0.20 so you might as well replace it. The o-rings are all part of the hoses so you can really only replace them if you replace the hoses.
--1995 E36 M3--2001 E46 325i--2008 E90 335i--

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Old 06-10-2011, 09:41 PM   #3
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check your motor mount or the....top of your control arm
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Old 06-11-2011, 11:25 AM   #4
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It's a crush washer. Meant to be replaced not reused. It works as a gasket to prevent fluid leaks so I'd replace it with a new one.
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