Can't seem to bleed front brake...?

CC268
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256
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7/22/2013
Location
Surprise, AZ US
Edited Date/Time 11/7/2014 1:38pm
Just got my Motion Pro Brake Bleeder tool (basically just a one way check valve) and tried to bleed my front brake. I could not seem to get the bubbles out...I am wondering if maybe there is a leak in my line somewhere? Thing is there are no visible leaks at all so I am kind of lost as to why I can't seem to flush those bubbles out. Maybe the line isn't sealed well enough around the nipple?

Oh and it is a 2009 CRF450R.

Any help?
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ruskymx
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6/22/2014
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Orwigsburg, PA US
11/6/2014 7:20pm
I read that some people had trouble bleeding the front brake while doing research on one of my projects that I picked up. Try bleeding the line at the connection at the MC. I can't say it works from experience, but I did read it on the internet so it must be true...right? lolBlink It may be a little messy but worth a shot.

Ruskymx
11/6/2014 9:19pm
Get something's really small that really vibrates, like a hand held foot massager and run it up and down the brake line and on the caliper a few seconds and see if that helps. It should help any trapped air bubbles to escape.. Its worked for me..
MXVet261
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Valley City, OH US
11/6/2014 9:47pm Edited Date/Time 11/6/2014 9:48pm
Easy trick to get bubbles to pop upward and out:

Remove master cylinder cap.
Suck out a little fluid so it's about half full at most.
Have a friend watch at the master cylinder, while you grab the caliper with both hands.
Put both thumbs on the caliper and your fingers on the rotor, and squeeze it so the pistons compress back into the caliper.
This will push all the fluid upward in the system.

Most likely, your friend will see some bubbles pop up. Pump the front brake and repeat this a couple times, then proceed with normal bleeding process.
nytsmaC
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Frig Off CA
11/7/2014 1:45am
Get something's really small that really vibrates, like a hand held foot massager and run it up and down the brake line and on the caliper...
Get something's really small that really vibrates, like a hand held foot massager and run it up and down the brake line and on the caliper a few seconds and see if that helps. It should help any trapped air bubbles to escape.. Its worked for me..
Careful with this. I had to buy my gal a new rabbit after getting brake fluid all over her favorite one.

The Shop

CC268
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Location
Surprise, AZ US
11/7/2014 9:58am Edited Date/Time 11/7/2014 10:22am
I will try some of those thanks guys. Do I need to take my front wheel off to compress pistons into the caliper? It is hard to do that with the stupid rotor cover on...
CC268
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Surprise, AZ US
11/7/2014 9:59am Edited Date/Time 11/7/2014 11:19am
ruskymx wrote:
I read that some people had trouble bleeding the front brake while doing research on one of my projects that I picked up. Try bleeding the...
I read that some people had trouble bleeding the front brake while doing research on one of my projects that I picked up. Try bleeding the line at the connection at the MC. I can't say it works from experience, but I did read it on the internet so it must be true...right? lolBlink It may be a little messy but worth a shot.

Ruskymx
How exactly do you do that? Called my local mechanic who normally does this and he said to do that but not sure how you would do it? Suck it out with a turkey baster or something?
CC268
Posts
256
Joined
7/22/2013
Location
Surprise, AZ US
11/7/2014 1:38pm
So I just reverse bled them using a syringe I picked up from Tractor Supply...WOW! It worked awesome and was soooo easy! Too bad I spent $19 on that Motion Pro brake bleeder. Going to do my rear brakes now.

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