Brake bleeding questions

inc55 said:

I tried searching but didn't find the answers to my questions. Ok, so I'm in the process of piecing together my NQSBBK and I wanted to know a few things.

1. If i'm only changing my front brakes, do I need to bleed the rears?
2. The master reservoir cannot go below the min mark or air will get in?
3. If the answer to question 1 is no, then will I have different brake fluids in my car?
4. What is the bleed order on the mk6 gti?
5. When installing new SS lines, will brake fluid squirt out when disconnecting stock hose?

Any other tips/advice is appreciated.

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kevinadamsvw said:

bleed order is actually lf rf lr rl...
started with the mk5..

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maxtdi said:

One should always start with the furthest wheel away from the brake booster/reservoir.

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plac said:

and end with the closest. which is why your order doesnt make sense. you ended with RF.

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kevinadamsvw said:

bleed order is actually lf rf lr rl...
started with the mk5..

Click to expand...

inc55 said:

wow, that seem complicated.

Is ATE Super Blue good for ABS. ESP systems?

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HI-life-GTI said:

Copied/Pasted from ALLdata

On vehicles with Electronic Differential Lock (EDL), EDL/Anti-Slip Regulation (ASR) or EDL/ASR/Electronic Stabilization Program (ESP), the brake system must be pre-bled when a chamber in the brake fluid reservoir is completely empty. This will happen if there are leaks in the brake system.

Pre-Bleeding



Connect the (VAS 5234) or (V.A.G 1869 ).
Bleeding sequence:

1 - Bleed the left front and right front brake calipers simultaneously

2 - Bleed the left rear and right rear brake caliper together simultaneously



With the bleeder bottle hoses attached, leave the bleeder valves open long enough that brake fluid exits without bubbles.
Then, the brake system must be bled normally
Bleeding

Adhere strictly to the work sequence when bleeding the brake system.



Connect the (VAS 5234) or (V.A.G 1869 ).
Open the bleeder valves in the sequence below and bleed the brake calipers.
1- Left front

2 - Right front

3 - Left rear

4 - Right rear

Use a suitable bleeder hose. It must fit tightly on the valve so that no air gets into the brake system.



With the bleeder bottle hose attached, leave the valve open long enough that brake fluid exits without bubbles.
Post-Bleeding

A second mechanic is required to assist:



Press the brake pedal forcefully and hold.
Open the bleeder valve at the brake caliper.
Press the brake pedal down to the floor.
Close the bleed valve when the brake pedal is pushed down all the way.
Release the brake pedal slowly.
This bleeding procedure must be performed 5 times per brake caliper.

Bleeding sequence:

1- Left front

2 - Right front

3 - Left rear

4 - Right rear

A road test must be performed after bleeding. During this, at least one ABS regulation stop must be performed!

Click to expand...

HI-life-GTI said:

Copied/Pasted from ALLdata

On vehicles with Electronic Differential Lock (EDL), EDL/Anti-Slip Regulation (ASR) or EDL/ASR/Electronic Stabilization Program (ESP), the brake system must be pre-bled when a chamber in the brake fluid reservoir is completely empty. This will happen if there are leaks in the brake system.

Pre-Bleeding

Connect the (VAS 5234) or (V.A.G 1869 ).
Bleeding sequence:

1 - Bleed the left front and right front brake calipers simultaneously

2 - Bleed the left rear and right rear brake caliper together simultaneously

With the bleeder bottle hoses attached, leave the bleeder valves open long enough that brake fluid exits without bubbles.
Then, the brake system must be bled normally
Bleeding

Adhere strictly to the work sequence when bleeding the brake system.

Connect the (VAS 5234) or (V.A.G 1869 ).
Open the bleeder valves in the sequence below and bleed the brake calipers.
1- Left front
2 - Right front
3 - Left rear
4 - Right rear

Use a suitable bleeder hose. It must fit tightly on the valve so that no air gets into the brake system.

With the bleeder bottle hose attached, leave the valve open long enough that brake fluid exits without bubbles.
Post-Bleeding

A second mechanic is required to assist:

Press the brake pedal forcefully and hold.
Open the bleeder valve at the brake caliper.
Press the brake pedal down to the floor.
Close the bleed valve when the brake pedal is pushed down all the way.
Release the brake pedal slowly.
This bleeding procedure must be performed 5 times per brake caliper.

Bleeding sequence:
1- Left front
2 - Right front
3 - Left rear
4 - Right rear

A road test must be performed after bleeding. During this, at least one ABS regulation stop must be performed!

Click to expand...