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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Apr-14-2011, 06:40:56 AM   #1
motomo
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Default Bleeding Brakes

Over the past two evenings, i installed the Bimmerworld SS brake lines and bled the brakes and clutch on my M3, but I have a few questions.

1. According to the madrussian guide, bleeding the brakes and clutch will use 1.5L of fluid, but I used less then 1L. Did I not do it enough? The fluid in the car was Amber, and i put in ATE Superblue, and each corner clearly had blue fluid coming through.

2. The car was not running while bleeding. Just read a thread talking about having the car running while doing bleeding, should I bleed again with the car running?

3. Pretty sure that I didn't have the cap on the master cylinder while bleeding one corner, does that make a difference?
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Old Thu, Apr-14-2011, 06:55:20 AM   #2
vtn86
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Default Re: Bleeding Brakes

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Originally Posted by motomo View Post
Over the past two evenings, i installed the Bimmerworld SS brake lines and bled the brakes and clutch on my M3, but I have a few questions.

1. According to the madrussian guide, bleeding the brakes and clutch will use 1.5L of fluid, but I used less then 1L. Did I not do it enough? The fluid in the car was Amber, and i put in ATE Superblue, and each corner clearly had blue fluid coming through.

2. The car was not running while bleeding. Just read a thread talking about having the car running while doing bleeding, should I bleed again with the car running?

3. Pretty sure that I didn't have the cap on the master cylinder while bleeding one corner, does that make a difference?
1. It's just for reference. As long as there's no air and the fluid is swapped, you're set.

2. Car does not need to be on.

3. Doesn't matter as long as you didn't introduce air into the system.
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Old Thu, Apr-14-2011, 06:58:35 AM   #3
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Default Re: Bleeding Brakes

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1. It's just for reference. As long as there's no air and the fluid is swapped, you're set.

2. Car does not need to be on.

3. Doesn't matter as long as you didn't introduce air into the system.
Cant get any much simplier than that. As long as you have no leaks, and your brake pedal isnt soft or doesnt go right to the floor each and evey time, life is good.
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Old Thu, Apr-14-2011, 08:46:26 AM   #4
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Default Re: Bleeding Brakes

Just make sure to avoid air bubles.
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Old Thu, Apr-14-2011, 01:15:26 PM   #5
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Default Re: Bleeding Brakes

Iv never heard of anyone running the car while bleeding the brakes. Remember start bleeding from farthest from the master cylinder. Dont forget the clutch
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Old Thu, Apr-14-2011, 03:39:32 PM   #6
motomo
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Default Re: Bleeding Brakes

What i had read about running the car while bleeding brakes was that it would activate the ABS and get more fluid squeezed out from it. If it's nothing to worry about, then i won't worry about it. I haven't driven the car yet to tell how the pedal response is yet, so that will be the real test.
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Old Thu, Apr-14-2011, 05:16:45 PM   #7
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Default Re: Bleeding Brakes

Tap the calipers with a rubber mallet as you bleed them to dislodge and air bubbles. Since you replaced the lines you pushed a decent amount of air through the calipers and sometime the bubbles like to stick in there.
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Old Thu, Apr-14-2011, 05:17:32 PM   #8
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Default

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Originally Posted by motomo View Post
What i had read about running the car while bleeding brakes was that it would activate the ABS and get more fluid squeezed out from it. If it's nothing to worry about, then i won't worry about it. I haven't driven the car yet to tell how the pedal response is yet, so that will be the real test.
To bleed the abs you'll need to activate it with a gt1. No need to do that


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Old Thu, Apr-14-2011, 07:17:57 PM   #9
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Default Re: Bleeding Brakes

Sorry to threadjack but is it recommended that I bleed clutch after replacing a caliper?
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Old Thu, Apr-14-2011, 07:27:17 PM   #10
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Sorry to threadjack but is it recommended that I bleed clutch after replacing a caliper?
Yes all the lines should be bled


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Discussing Bleeding Brakes in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)