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Front brakes issue.

1986 Views 10 Replies 10 Participants Last post by  unfast1
I had the front right fork seal replaced. When I got my bike back the front brakes just sucked. I called the dealer and asked them if they knew what would be causing it and they said to bleed the brakes which I had already done. Of course they say they did nothing wrong. They were perfect before the bike went to the shop.

It works good the first time I use the brakes then goes back to the spongy feeling. Normally these brakes will throw you over the bars as you all know. Now they just suck and take forever to stop.

I've bleed them, replaced all the fluid with new, bleed the mc, and cleaned the pads and rotors. I've bleed the whole system at least 7 times, and like I said they work great the first time I pull the lever, after moving they go back to crap.

Any other suggestions?
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I had the front right fork seal replaced. When I got my bike back the front brakes just sucked. I called the dealer and asked them if they knew what would be causing it and they said to bleed the brakes which I had already done. Of course they say they did nothing wrong. They were perfect before the bike went to the shop.

It works good the first time I use the brakes then goes back to the spongy feeling. Normally these brakes will throw you over the bars as you all know. Now they just suck and take forever to stop.

I've bleed them, replaced all the fluid with new, bleed the mc, and cleaned the pads and rotors. I've bleed the whole system at least 7 times, and like I said they work great the first time I pull the lever, after moving they go back to crap.

Any other suggestions?
I think you still have a very small amount of air trapped in the master cyl pump itself right between the where the reservoir feeds into it and the port that is covered when the piston moves the slightest. The air doesn't get pumped down into the lines because there is so little actual fluid flow in the braking system. When you first pull the lever it feels fine but the air is sucked into the piston port. When you grab it again, the air is now in the port so it feels soft. To get it out, you must aggressively bleed the pump. Take your time and pump a LOT of fluid through it. The air may be so small that you won't even see it escape, but I think it is definitely in there...
1 - 1 of 11 Posts
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