need help bleeding brakes...ASAP

[mouramen]

Hi guys,

Decided to change the brake fluid today:
Started at the rear left wheel.
Topped the fluid to MAX.
My helper started pressing the brakes several times and the old fluid started to come out the transparent tupe I inserted on the nipple into a bottle.
So far so good...

I was waiting that new fluid would start to come out but now only air comes out...sometimes fluid...

What gives guys??

The fluid in the resevoir is at the middle of MIN and MAX!

Please help!

[leathermang]

Any chance the helper let the brake pedal back UP before you tightened the nipple ?

[mouramen]

Originally Posted by leathermang

Any chance the helper let the brake pedal back UP before you tightened the nipple ?

I think that's exactly what happened...

And now what can I do?

[cmbdiesel]

Originally Posted by mouramen

I think that's exactly what happened...

And now what can I do?

Pretend it never happened and start the bleeding process all over.

[280EZRider]

Start with the Right Rear (farthest from the MC). Once the level in the MC reaches half, put new fluid in to avoid introducing air. And put a piece of wood such as a 2x4 under the brake pedal to avoid pushing the MC seal completely out.

[leathermang]

I am psychic !!!

LOL,
No harm done...
you just start over making sure you have fluid in the ' tank' up front..
and agree with your helper that they pump a little until they feel some pressure, keep their foot on the pedal while it goes down due to you opening the nipple...
YOU close the nipple before the stream of juice stops... and yell, PUMP...
then they are allowed to let the brake peddle UP...and start gently pumping again..
so you always give them permission before they let the pedal up.. that is the trick..

[cmbdiesel]

Originally Posted by leathermang

I am psychic !!!

LOL,
No harm done...
you just start over making sure you have fluid in the ' tank' up front..
and agree with your helper that they pump a little until they feel some pressure, keep their foot on the pedal while it goes down due to you opening the nipple...
YOU close the nipple before the stream of juice stops... and yell, PUMP...
then they are allowed to let the brake peddle UP...and start gently pumping again..
so you always give them permission before they let the pedal up.. that is the trick..

I've always used DOWN and UP. Distinctly different sounds, and words that even a young helper knows pretty well.

Confusing pump with up and you're back at square one

[leathermang]

Using the clear catcher bottle is nice... you can examine the stuff coming out... and not spray it on you hopefully...
but unless you have one of those one way bleeder valves attached ( which I have never seen work great )... you have to be in charge of the ' gate' nipple....
and it must be a one way function... fluid coming down and out..
and fluid being replaced from the ' tank' at the master cylinder...
if you mess up and let the tank get low then that is the same thing as letting air in from the bottom... you just start over following the rules and it will work out..

[mouramen]

But there is no pressure on the pedal now, it sinks easly...
I'm doing the procedure with the engine turned off, is this right?

[cmbdiesel]

Originally Posted by mouramen

But there is no pressure on the pedal now, it sinks easly...
I'm doing the procedure with the engine turned off, is this right?

yep, engine off.
just pump it up till you get a little pedal, and start the bleeding over

[BodhiBenz1987]

Originally Posted by mouramen

But there is no pressure on the pedal now, it sinks easly...
I'm doing the procedure with the engine turned off, is this right?

Yes, engine off. Does it build any pressure if you pump it a few times quickly (with bleeder closed)?

I ended up investing in a power bleeder for this job ... took a lot of the puzzle out of it. Without one I think the big key is not letting up the pedal while you have the bleeder open. Pump, pump pump pump pump, hold down pedal, open bleeder, let fluid out, close bleeder ... pump pump pump, etc.

[cmbdiesel]

Originally Posted by BodhiBenz1987

Yes, engine off. Does it build any pressure if you pump it a few times quickly (with bleeder closed)?

I ended up investing in a power bleeder for this job ... took a lot of the puzzle out of it. Without one I think the big key is not letting up the pedal while you have the bleeder open. Pump, pump pump pump pump, hold down pedal, open bleeder, let fluid out, close bleeder ... pump pump pump, etc.

I use the invaluable MityVac.

[Brian Carlton]

Originally Posted by mouramen

But there is no pressure on the pedal now, it sinks easly...
I'm doing the procedure with the engine turned off, is this right?

The reservoir is divided into two sections..........one for the front.........one for the rear.

Your likely issue is that you've got no fluid in the reservoir for the rear brakes. The design of the reservoir is not all that great...........the front section needs to be filled to the very top to allow fluid to spill over to the rear reservoir.

Check the rear reservoir by looking at it from the passenger side...........it's probably empty.

[mouramen]

Originally Posted by Brian Carlton

The reservoir is divided into two sections..........one for the front.........one for the rear.

Your likely issue is that you've got no fluid in the reservoir for the rear brakes. The design of the reservoir is not all that great...........the front section needs to be filled to the very top to allow fluid to spill over to the rear reservoir.

Check the rear reservoir by looking at it from the passenger side...........it's probably empty.

Humm...
Didn't knew that... I'll check the reservoir, but I think mine isn't divided...

Been PRESS - OPEN NIPPLE - CLOSE NIPPLE - DEPRESS for about 20 minutes and nothing!!!!! Only bursts of air...

[mouramen]

Same thing now in the other rear wheel... Only air...