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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 07-24-2013, 07:13 PM   #1
merkme19
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Please help!Engine block drain plug

Im in the middle of doing a coolant change on my 2003 bmw 325xi and I cant find thr engine block drain plug. Can anyone help me?

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Old 07-24-2013, 07:16 PM   #2
Foxtrot_Uniform
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Passenger side of engine. Some will say it is easy... I couldn't get to it. I just filled up with distilled water and drained it again and then topped it all off with the 50/50 BMW antifreeze and distilled water.

Maybe a cheap way out but it worked well!
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Old 07-24-2013, 10:02 PM   #3
White_Knuckles
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You can reach it by hand and not mess with socket swivels and extensions. See post #17 and following posts.


http://forum.e46fanatics.com/showthr...highlight=plug
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Old 07-24-2013, 10:23 PM   #4
Kubica
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Quote:
Originally Posted by Big Rick View Post
Passenger side of engine. Some will say it is easy... I couldn't get to it. I just filled up with distilled water and drained it again and then topped it all off with the 50/50 BMW antifreeze and distilled water.

Maybe a cheap way out but it worked well!
I like this method better. Draining from the block will probably get you drenched in old coolant and make a mess if you do it on stands.

I drained the block once a few years ago. I drain the rad at least twice a year so no plans to drain the block again.
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Old 07-24-2013, 10:27 PM   #5
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Originally Posted by White_Knuckles View Post
You can reach it by hand and not mess with socket swivels and extensions. See post #17 and following posts.


http://forum.e46fanatics.com/showthr...highlight=plug
How do you break/remove the drain bolt?
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Old 07-25-2013, 01:33 AM   #6
White_Knuckles
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Quote:
Originally Posted by Kubica View Post
How do you break/remove the drain bolt?

If you skim the link I added in the post, you'll see your hand goes clear through to the bolt. I used a normal 3/8 ratchet handle (without an extension) and it popped without crazy pressure. I chose a box wrench to seat it.
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Old 07-25-2013, 10:00 AM   #7
SamDoe1
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Quote:
Originally Posted by Big Rick View Post
Passenger side of engine. Some will say it is easy... I couldn't get to it. I just filled up with distilled water and drained it again and then topped it all off with the 50/50 BMW antifreeze and distilled water.

Maybe a cheap way out but it worked well!
^ This is also what I did.

Last edited by SamDoe1; 07-25-2013 at 10:00 AM.
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Old 07-25-2013, 11:06 AM   #8
merkme19
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Re: Please help!Engine block drain plug

Thanks guys I ended up using the fill again and drain then refill method just for time restraint reasons but then when I went to swith out my old thermostat lucky me the two bolts on the bottom of the thermostat are rusted and stripped. Any tips on getting them off ?

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Old 07-25-2013, 02:45 PM   #9
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How stripped is stripped? Can you still get a wrench on it or is it completely rounded off? If you can get a wrench on it, try an impact to remove it.

You can get special sockets to remove bolts that are partially stripped but if it's completely rounded off you'll have to use an extractor to get it off.
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Old 07-25-2013, 02:51 PM   #10
merkme19
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Re: Please help!Engine block drain plug

"How stripped is stripped? "


I tried going through a few sizes of sockets but none seemed to catch enough. I also didnt want to put on to much pressure where it stripped more so I think thats out of the question. And is there anywhere that I can find replacement bolts ?
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Old 07-25-2013, 03:31 PM   #11
SamDoe1
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Originally Posted by merkme19 View Post
"How stripped is stripped? "


I tried going through a few sizes of sockets but none seemed to catch enough. I also didnt want to put on to much pressure where it stripped more so I think thats out of the question. And is there anywhere that I can find replacement bolts ?
Your local dealer has all the parts you'll ever need. Otherwise order online.
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Old 07-25-2013, 11:20 PM   #12
SeattleLSB
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Follow White Knuckles, he saved my bacon on my ride! If you remain calm under there you will find the path that requires zero extensions!

Joe
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Old 07-27-2013, 12:03 AM   #13
White_Knuckles
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One shall seek the path to the waters ...


Or a coolant bath that is.
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Old 07-27-2013, 02:29 AM   #14
e46alfonso
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don't touch that thing.
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Old 07-27-2013, 11:00 PM   #15
SeattleLSB
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Please help!Engine block drain plug

Yes touch it, it's the only way to empty the system there is a big difference in coolant levels from this point.



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Old 09-15-2015, 10:09 PM   #16
TotheMountains!
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Argh

Hey, I'm trying to do the coolant system flush and refresh while I have the VANOS off, and I'm stuck at trying to reach the block drain. White Knuckles: In attempting your method, do you have the front wheel off to reach the drain bolt?
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