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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 04-27-2013, 08:57 AM
Rafa20440 Rafa20440 is offline
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Mein Auto: 2001 325ci
Radiator leak?

I have a 2001 BMW 325ci n I noticed a leak not sure if its the radiator or what. Any help would be appreciated.

Thanks

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  #2  
Old 04-27-2013, 09:01 AM
GoForthFast GoForthFast is offline
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With your first post here----Welcome!
Next, have you read the Wiki up above and especially scrutinized the cooling system part?

You have an automatic trans, so are you leaking coolant of Trans fluid?
Clean and dry things off and then watch where the leak starts closely.

Probably due to replace all the coolant system parts to make your car reliable again. Five or six hundred in parts, and judging from your pic, you can DIY this.
Coolant system fail will destroy your engine in a few minutes.
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  #3  
Old 04-27-2013, 09:48 AM
Rafa20440 Rafa20440 is offline
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Quote:
Originally Posted by GoForthFast View Post
With your first post here----Welcome!
Next, have you read the Wiki up above and especially scrutinized the cooling system part?

You have an automatic trans, so are you leaking coolant of Trans fluid?
Clean and dry things off and then watch where the leak starts closely.

Probably due to replace all the coolant system parts to make your car reliable again. Five or six hundred in parts, and judging from your pic, you can DIY this.
Coolant system fail will destroy your engine in a few minutes.
First of all, thanks for all the help and Welcoming me to the site.


The leak seems to be coming from where the drop is seen in the pic right next to where the plug is at.
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  #4  
Old 04-27-2013, 10:32 AM
GoForthFast GoForthFast is offline
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stick your finger into it to diagnose if it is coolant or tranny fluid.

Is your coolant level down when you check the level when cold?
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  #5  
Old 04-27-2013, 10:43 AM
Rafa20440 Rafa20440 is offline
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Quote:
Originally Posted by GoForthFast View Post
stick your finger into it to diagnose if it is coolant or tranny fluid.

Is your coolant level down when you check the level when cold?
It's green so I'm assuming its coolant that is leaking. I check the reservoir tank every morning and it's at the minimum level.
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  #6  
Old 05-26-2013, 11:23 AM
Sunsetter Sunsetter is offline
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Mein Auto: 2001 330i, 2006 MX-5
DIY radiator repair that works

Just in case you a DIY type, low on funds, or away from a trust worthy radiator specialist, this inexpensive fix has worked in my LandRover for over two years.

A decent fix to a nail or pin hole sized leak in radiator is to seal using JB WELD epoxy that has been sucked into the hole using vacuum pressure. I have use this method successfully and the fix has lasted over two years in the desert and still no return of the leak!

First drain the radiator completely, flush with water, then blow air through cap and out the radiator lower hose opening to dry out. Also heat the area of the hole with a blowdryer or torch to dry the inside. Then mix the two part epoxy and spread over the hole in the radiator. Use a vacuum cleaner hose attached to the radiator cap opening with other hoses attached. You are doing it right when the thick epoxy is slowly getting sucked into the hole in the radiator without tearing apart. Stop the vacuum and add a bit more epoxy to increase thickness of epoxy. Give it at least 12hours to dry. Then refill radiator with water to check the fix. I think you will find it is fixed and you can now refill with coolant/water mix. I works because the epoxy gets attached to both sides of the hole.

Best Regards,
Black1
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  #7  
Old 05-26-2013, 03:21 PM
ahull's Avatar
ahull ahull is offline
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Sunsetter - this thread has been quiet for a month so I'm wondering if the OP has already addressed. But this is a good bit of info nonetheless so I'm going to mention it in the wiki as a possible fix to small holes in radiator.

http://www.bimmerfest.com/wiki/index...E46#Weak_spots
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2003 330i TiAg Sport Pkg ~90k miles
DIY MODS: AA Stage I supercharger, Meyle HD FCAs w Powerflex CABs, Bilstein shocks, Meyle HD Rtabs, Angel Eyes, Clear Corners/Markers w/ LEDs, LED tails, ZHP rims, Akebono pads, AUX input
DIY E46 Merit Badges: Sunroof resurrection, CCV, OFHG, VCG w/ VANOS seals, DISA, Cooling Refresh I, steering giubo, window regs, Magnetic Infandibulator (see wiki)
DIY On deck: Rear Diff bushing. UUC SSK, clutch job eventually, Wavetrac LSD

Last edited by ahull; 05-26-2013 at 03:27 PM.
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  #8  
Old 05-26-2013, 07:06 PM
GoForthFast GoForthFast is offline
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Quote:
Originally Posted by Sunsetter View Post
A decent fix to a nail or pin hole sized leak in radiator is to seal using JB WELD epoxy that has been sucked into the hole using vacuum pressure. I have use this method successfully and the fix has lasted over two years in the desert
I used the same epoxy repair on my STEAM radiator in my apartment more than twenty years ago and it just started hissing again lately! Just make sure to use a two part epoxy for the best fix.
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  #9  
Old 05-30-2013, 07:19 PM
Sunsetter Sunsetter is offline
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best place to post helpful care care tips.

Thanks I will check out that link. I also have a good tip on how to easily get ride of water spots....which discussion group should I send this to?

Black1
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  #10  
Old 06-21-2013, 06:58 PM
TK9211 TK9211 is offline
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I'm sorry for sounding naive, but which is the leak spot check and fix link?? Please repost link below.. Kindly thankful of you..
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  #11  
Old 06-22-2013, 07:49 AM
ahull's Avatar
ahull ahull is offline
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Location: Carolina
 
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Mein Auto: ist schnell! (03 330i SC)
Post #6 above. The link in the wiki is to this thread so you're already where u need to be
__________________
2003 330i TiAg Sport Pkg ~90k miles
DIY MODS: AA Stage I supercharger, Meyle HD FCAs w Powerflex CABs, Bilstein shocks, Meyle HD Rtabs, Angel Eyes, Clear Corners/Markers w/ LEDs, LED tails, ZHP rims, Akebono pads, AUX input
DIY E46 Merit Badges: Sunroof resurrection, CCV, OFHG, VCG w/ VANOS seals, DISA, Cooling Refresh I, steering giubo, window regs, Magnetic Infandibulator (see wiki)
DIY On deck: Rear Diff bushing. UUC SSK, clutch job eventually, Wavetrac LSD
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