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Old May 12, 2018 | 02:26 PM
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Default Front Brakes

I’m having an issue hope someone can help with correcting. The front brakes went out and I found a leak in the brake line. I changed it out and I’ve bled the master cylinder, line and caliper with no air from the bleeder. However, as soon as I take off down the road I lose the brakes again and cannot seem to figure out the issue. Is there something unique to motorcycle brakes when bleeding than those on a car or truck? Any help would be greatly appreciated. Thank you in advance.
 
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Old May 12, 2018 | 03:31 PM
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Originally Posted by Mimbilly
I’m having an issue hope someone can help with correcting. The front brakes went out and I found a leak in the brake line. I changed it out and I’ve bled the master cylinder, line and caliper with no air from the bleeder. However, as soon as I take off down the road I lose the brakes again and cannot seem to figure out the issue. Is there something unique to motorcycle brakes when bleeding than those on a car or truck? Any help would be greatly appreciated. Thank you in advance.
Warped rotor, pushing the piston calipers out too far once you are moving?
Just a wild guess, you haven't provided information provided to diagnose. What exactly do you mean by "brakes went out"?
 

Last edited by Warp Factor; May 12, 2018 at 03:32 PM.
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Old May 12, 2018 | 03:49 PM
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The brakes go soft but “pumping” the handle and they start to grab and you get resistance in the handle.
 
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Old May 12, 2018 | 04:07 PM
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I suggest keep pumping; it may take a while. I had the rear brake light switch replaced on my bike and of course that opened the system. When I got the bike back the brakes worked, but the brake pedal was almost going to the floorboard. After a day or two of riding and using the brake, the engagement point on brake the pedal gradually came back up to its original postion.
 
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Old May 13, 2018 | 10:16 AM
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They should come back immediately after bleeding.....Sounds like you still have air in the line or pulling air from somewhere.
 
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Old May 13, 2018 | 07:38 PM
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That’s my thoughts too which leaves the master cylinder since everything else is rebuilt/replaced already.
 
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Old May 14, 2018 | 09:44 AM
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Did you try reverse bleeding? That should push any air from the caliper back to the master.
 
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Old May 14, 2018 | 10:25 AM
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Do you have anti lock brakes? I believe getting air out of the ABS module requires more than conventional bleeding.
 
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Old May 14, 2018 | 10:27 AM
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Originally Posted by sevebou63
Did you try reverse bleeding? That should push any air from the caliper back to the master.
Yes, that’s how I originally filled/bled the system after I changed the line. I’ve bled the system at the master cylinder and I think there’s just air in the system I haven’t gotten out yet.
 
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Old May 14, 2018 | 11:18 AM
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Originally Posted by Big Block 17
Do you have anti lock brakes? I believe getting air out of the ABS module requires more than conventional bleeding.
No they’re not ABS. Thanks
 
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