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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 03-17-2015, 04:13 AM   #1
iansevilla
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Compression Spring Plug

Anyone knows how to fix a small leak on one of the compression spring cover in the transmission? Should just put some luiquid seal and cover it? Trying to stop slow leak? Is it hard to fix the plug while tranny is in the car?
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Old 03-17-2015, 12:21 PM   #2
iansevilla
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Compression Spring Plug

Just curious if this can be done without taking the tranny down. Thanks in advance.

Last edited by iansevilla; 03-17-2015 at 10:55 PM.
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Old 03-20-2015, 11:29 AM   #3
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Old 03-20-2015, 02:06 PM   #4
KT22cliffjumper
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If you are talking about one of these plugs below then it's "doable" without taking the transmission out but it is royal pain in the ass to pop them out AND put the new plugs back in. I have no idea whether some liquid seal can seal any leak coming from the plugs.

http://www.m3forum.net/m3forum/showt...spring+SMG+DIY
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Old 03-20-2015, 03:44 PM   #5
iansevilla
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Thanks. I lost more than half a quart of pentosin since November after seal in tranny was worked on. I had it filled with silicon to see if it will stop leak. I hope it stops the leak coz my next clutch replacement won't be anytime soon. Clutch was replaced 13k ago. But if leak doesn't stop. I may need to have the tranny taken out. :-(
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Old 03-20-2015, 05:16 PM   #6
KT22cliffjumper
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Do you know which plug is leaking? Some are slightly easier to get to than others. The location of the plugs and the lack of the space around them just make it very difficult to put any kind of leverage to pop them off AND just as hard to put them back in.

Good luck whether you go liquid seal or plug replacement route.
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Old 03-20-2015, 05:22 PM   #7
iansevilla
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Yes, found the front lower plug seal leak. Filled it with liquid seal to see if it will fix it. Well, filled both of them. This tranny was converted from SMG to Manual last year. I'll check tranny for leak next week.
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Old 03-21-2015, 04:34 PM   #8
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This is my leaking tranny...lolClick image for larger version

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