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My clutch cable arrived today, so I got it installed and added fluid, it took a million pumps of the lever before it started to work, but it is working fine.

I then added fluid to the front brake reservoir and started pumping lever, a million times later it started to stiffen up, but when I stop pumping the lever I hear a kind of gurgling sound from the reservoir and then the lever is loose again. It seems as though air is getting into the reservoir somehow. If I pump it about 5 times it goes stiff again and then it bubbles when I stop. I see no air going into the reservoir from the top. Nothing is leaking out.

I checked the hoses and the reservoir and there are no leaks anywhere. Is it possible air can get in but brake fluid cannot get out?

Bleeding the brakes works normally, meaning there is fluid in the lines, the issue seems to be with the reservoir, but it was working perfectly before I started all of this.

Any ideas?

I am going to tighten the cables again in case that is it.
 

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It sounds like you indeed have air in the line. When bleeding the brakes you need to keep doing it until the air pocket is pushed out. You will have fluid coming out but can still have air trapped further up in the line. Make sure to follow proper procedures so you're not sucking air back into the system.


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Discussion Starter #3
It sounds like you indeed have air in the line. When bleeding the brakes you need to keep doing it until the air pocket is pushed out. You will have fluid coming out but can still have air trapped further up in the line. Make sure to follow proper procedures so you're not sucking air back into the system.
You got it, I pulled out the MityVac and got the air out of there quick and it is working fine again. Thanks.
 

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Another little trick is to put a tie wrap or something similar around the brake lever and place a weight on the pedal overnight and then rebleed the next day. Surprising how much air is still in the system even after what is apparently a successful bleed. Supposedly has to do with the constant pressure causing very small bubbles to coalesce into bigger ones that can be bled out. Not sure if this is the actual mechanism, but it does produce results.
 
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