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post #1 of 30 (permalink) Old 01-07-2013, 06:58 PM Thread Starter
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Exclamation Help Bleeding Brakes

I was bleeding my front brakes and while I was trying to bleed out the brake fluid some sucked back in and now the brake lever is gone flat, I cant press it all its like its not connected to anything it just goes in with no pressure.


Can anyone help please thank you?

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post #2 of 30 (permalink) Old 01-07-2013, 07:10 PM
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You have air in the line.

The easy way is to drop $40 on a bleeder, but you can do it by hand.

It may take several hundred pumps of the lever, but it will eventually firm up. Once it does, pump it until it gets as hard as possible, then bleed it.


Just keep pumping, it won't feel like anything is happening, but at some point it should pump up
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post #3 of 30 (permalink) Old 01-07-2013, 07:11 PM
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Keep pumping, it'll build pressure eventually. Sometimes it just takes longer.

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post #4 of 30 (permalink) Old 01-07-2013, 07:14 PM
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You have air in the line, pump it up till you get some pressure, crack the bleeder without letting loose of the lever to let the air out, close bleeder, repeat till air no longer comes out. Make sure to watch reservoir and add fluid as needed. I attach a piece of clear tubing (like for fish tanks) on the bleeder to direct it to a container.

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post #5 of 30 (permalink) Old 01-07-2013, 07:23 PM
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Bleeding brakes can be a frustrating job... But it just takes some patience and a bit of monotony. A brake bleeder will definitely make the job easier, but it's not necessary.

If you have a jar with a lid, a vacuum, a bit of tubing, and some tape to seal leaks you can make your own bleeder for free. I put one together in under 5 minutes once my hand pump bleeder broke, and it works way better than any hand pump one I've used. Just turn it on, make sure the fluid stays topped off, and let the vacuum do the work for you. I'll never go back to a hand pump bleeder again.

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post #6 of 30 (permalink) Old 01-07-2013, 07:42 PM Thread Starter
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Argh, im really frustrated now. I think I just didnt close the valve fast enough before letting go of the brake lever.

I'm just going to call the mechanic tomorrow to pick it up and vacumn out the line with a machine im too irritated.

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post #7 of 30 (permalink) Old 01-07-2013, 08:27 PM
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Quote:
Originally Posted by F4sSprintST View Post
pump it until it gets as hard as possible, then bleed it.
Heh.

Bleeding brake lines is a breeze with an assistant. Recruit a neighborhood kid if you don't have one of your own.
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post #8 of 30 (permalink) Old 01-07-2013, 09:15 PM
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Quote:
Originally Posted by nullmonkey View Post
Argh, im really frustrated now. I think I just didnt close the valve fast enough before letting go of the brake lever.

I'm just going to call the mechanic tomorrow to pick it up and vacumn out the line with a machine im too irritated.
Patience young grasshopper. Keep with it and eventually you'll get the air out. No need to call a mechanic. It's not a complicated job... It's just a frustrating job that feels like it will never end. I've bleed brakes countless times, and it still feels like I will never get the air bubbles out sometimes (well when doing by hand, that is). However, if you stick with it, they'll come out.


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post #9 of 30 (permalink) Old 01-07-2013, 09:18 PM
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You really don't need a pump to bleed brakes. Once you've done it a few times you can it all by yourself in just five to ten minutes per caliper. On most bikes I've seen you can reach the lever and bleeder by yourself.

Heck, you can even bleed your cars brakes in under 2 hours by yourself. But that is using a different method called gravity bleeding, but it gives you a rock hard pedal feel.
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post #10 of 30 (permalink) Old 01-07-2013, 09:31 PM
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DYI


Again, it will pump up. First one I did when I was a kid too hundreds of pumps
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post #11 of 30 (permalink) Old 01-08-2013, 05:39 AM
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Quote:
Originally Posted by nullmonkey View Post
I'm just going to call the mechanic tomorrow to pick it up and vacumn out the line with a machine im too irritated.
Stop, bro. No. Just go down to the local auto parts store or the local cycle gear. Buy a MityVac for about $40. Do it yourself.

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post #12 of 30 (permalink) Old 01-08-2013, 05:46 PM
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Have you ever bled brakes before?

Super easy.

1 - Pull the cap off your brake res.
2 - Fill it up with brake fluid.
3 - Put your clear tubing on your right caliper
4 - Put wrench on bleeder
5 - Push in brake lever
6 - Open bleeder
7 - Watch bubbles in tube
8 - Close bleeder
9 - Release brake lever
10 - Repeat steps 5 through 9 until you don't see bubbles
11 - Move tubing and wrench to left side and repeat steps 5 through 10. When you're done with the left side, do the right side one more time (usually good). If you really screwed it up, you may have to go side to side a couple of times.

If your lever doesn't firm up, put lots and lots of rags around parts near the master cylinder, put a wrench on the banjo bolt, pull in the lever and crack the banjo bolt open, close the banjo, release the lever

Fill up your cup every two or three lever pulls.

It's best to do it with a friend. Use the words, "in" and "out" to describe the lever action.

One last tip, I usually start by pulling the calipers off the bike and pushing the pads/pistons into the caliper.

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Last edited by Tony216; 01-08-2013 at 06:04 PM.
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post #13 of 30 (permalink) Old 01-08-2013, 07:29 PM
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You can skip step 8.

KeS
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post #14 of 30 (permalink) Old 01-08-2013, 08:18 PM
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Quote:
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You can skip step 8.

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i think that's what got him into trouble in the first place
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post #15 of 30 (permalink) Old 01-08-2013, 08:27 PM
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i think that's what got him into trouble in the first place
Not unless he skipped step 3 as well.

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