idigfunk

I didn't operate the handle at all during the back fill.

Aha!! Got it figured out. I read that article on splatshop about float heights numerous times, but I somehow missed this one piece (I'm attaching a link to that article below). I messed with that float tab til I was blue in the face, and between work and getting back into enduro bikes I left the trials to the side. I re-read the article. The issue was the overflow bowl drain tube that sticks from the bottom of the bowl was rubbing up against the floats. I bent it to the side, got it in the bike, and she's running perfect! Thank you all for the help. Hopefully this thread can help lead someone to the culprit of the same issue. https://www.splatshop.co.uk/blog/2012/12/setting-the-float-height-on-the-keihin-pwk-28/

Great thanks for the replies. Yes, it is a Keihin.

Hi there, I've been progressing with nose wheelies recently but every time I get a good one where I'm at the balance point, the bike wants to die once I come down, as if it's running out of fuel. I have to work the throttle for a good 5 seconds to keep it going. This also happens with a hard splatter or any sort of heavier impact but it's not quite as extreme as the nose wheelie. Does anyone have any ideas? Thanks, Seth

I used a 60mm syringe. Before I rebuilt the MC the pressure was so intense and it filled so slowly I couldn't tell if it was working. Once I rebuilt, it still took some pressure but you could see the reservoir filling pretty quickly. If it feels like the syringe is going to explode, something else is probably going on. I also had to clean up the bleed nipple a bit. Pulled it out and the hole in the bottom portion was kind of mangled.

Thanks for the recommendation. I rebuilt it, and backfilled the system from the caliper. Immediately the fluid rolled up into the MC with far less pressure than what I was using before. Sealed her up and the pressure is back to normal. Thanks again.

Great! Thanks guys. Ordered a rebuild kit and will let you know how it goes.

Hi there, I'm having some problems with my front brake that I just can't seem to figure out and am hoping someone here can help. I have a 2014 Sherco with a Braktec caliper and master cylinder. Here is the issue: The front brake is soft, but not always. I tried regular bleeding procedures by pumping the brake, holding, releasing bleed valve, tighten, repeat. I just put on a brand new caliper, hose and hardware connecting the hose to the caliper. I reverse bled the system taking care to not have any air in it. Once I did that, things were still quite soft and went back to regular bleeding process. That helped quite a bit. I did the bleeding process for a solid 20 minutes and the brake felt nice and firm. Every time I pumped the brake, held, then released the bleed valve, I could see air bubbles coming up through the master cylinder upon opening the bleed. They were very tiny. Again, did this for about 20 minutes and it never stopped. Eventually I put the cover on the MC. Now the brake is spongy, to not working at random. If the bike sits for a few minutes then I pull the brake, it will bottom out giving no braking power. After a handful of pumps braking power will come back. Sometimes if I'm hopping on the bike with the lever pulled in it will work at first, but a 10 seconds in the braking power goes out. Any thoughts? More time bleeding? Perhaps a rebuild in the master cylinder? Any help here would be extremely appreciated. I'm growing tired of not being able to ride. Thanks, Seth