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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 Fri, Nov-21-2008, 06:45:07 PM   #1
flightz71
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Default Help with bleeding brakes

Bleeding brakes has become almost a nightmare for me.

If I accidentally sucked air into the reservoir tank in the engine bay, does that mean there is air in my ABS system for sure?

The first was trying madrussian’s method by utilizing a motive power bleeder. When bleeding, I might have accidentally tilted the tank so the little hose in the tank was sucking in air instead of fluid. I don’t understand why this would be a problem. The motive bleeder forces fluid into the top of the reservoir through a universal cap… so I’m guessing fluid trickles from the pressurize tank and waterfalls into the reservoir. If air is being forced in, the air will remain on top of the reservoir and wouldn’t enter the pool of fluid correct? I don’t see how this would allow air to enter the system.

The second try was with the buddy method. I would fill the reservoir up, cap it, and have him pressurize the brake system. Then he would hold the pedal down hard, and I would then open the valve on a caliper just enough so brake fluid rushes out. He would tell me stop before the pedal hit the ground, and I would lock the bleeder valve shut. We would repeat this 6x per caliper for all 4 calipers.

My mistake though is I think I forgot to keep and eye on the reservoir. I would refill after each 6x per caliper… but the fluid might have gotten too low one time. If air gets sucked in, is it in the abs system for sure?

This is really effin annoying. I’ve wasted so much damn brake fluid, spent money on a bleeder, but now might need to take my car to a shop with GT1 to get air out of the damn system.

In the end… upgraded stainless lines, did a full flush but not the brake pedal feels shitty and unresponsive.

Any help would be appreciated.

Thanks in advance.

-Calvin
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Old Fri, Nov-21-2008, 06:59:32 PM   #2
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sup calvin. how funny i am about to do the same thing and im hoping i dont run into the issues you are having. i also bought a motive power bleeder, SS lines, motul fluid. it would really suck to waste the fluid since i only bought 2 bottles of it.
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Old Fri, Nov-21-2008, 08:31:05 PM   #3
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If you sucked up air, it's probably in the ABS system. Go to the dealer and have them bleed the system with the GT1.
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Old Fri, Nov-21-2008, 08:40:18 PM   #4
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Someone (I think M3peat) posted a short cut method of bleeding the ABS w/o a GT1. IIRC it involved having the car cranked up while bleeding via the buddy method, so that when the bleeder valve opens the ABS kicks on and bleeds itself.
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Old Fri, Nov-21-2008, 08:40:56 PM   #5
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or if you know someone with an Autoenginuity tool it has the bleed function
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Old Fri, Nov-21-2008, 09:20:13 PM   #6
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Originally Posted by playskool1 View Post
sup calvin. how funny i am about to do the same thing and im hoping i dont run into the issues you are having. i also bought a motive power bleeder, SS lines, motul fluid. it would really suck to waste the fluid since i only bought 2 bottles of it.
yah dude, just make sure you keep that reservoir topped off. And make sure the bleeder is perfectly level and the pipe doesn't suck up air. Have a buddy check or hold the tank the whole time you're bleeding.
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Old Fri, Nov-21-2008, 09:21:32 PM   #7
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Originally Posted by drunk hal View Post
Someone (I think M3peat) posted a short cut method of bleeding the ABS w/o a GT1. IIRC it involved having the car cranked up while bleeding via the buddy method, so that when the bleeder valve opens the ABS kicks on and bleeds itself.
thx for the tip bro!
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Old Tue, Dec-16-2008, 01:00:45 AM   #8
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Originally Posted by docwyte View Post
If you sucked up air, it's probably in the ABS system. Go to the dealer and have them bleed the system with the GT1.
how much do they charge at the dealership for bleeding the brake system with the GT1?
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Old Tue, Dec-16-2008, 01:02:26 AM   #9
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Quote:
Originally Posted by playskool1 View Post
how much do they charge at the dealership for bleeding the brake system with the GT1?
Whatever the dealers standard brake flush runs for + an hour of labor.
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Old Tue, Dec-30-2008, 03:36:53 AM   #10
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Arghh, what a pain in the ass. I have the exact same problem. I used a Motive bleeder and made sure I didn't push air into the lines. I've got an Autenginuity scanner but I can't figure out how to do the ABS bleed procedure.
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Discussing Help with 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)