Tektro tkd88 issues bleeding
 

Hi
I have tektro tkd88 brakes on my mountain bike, they are not great but I want to learn how to use them the longest possible.
And find out what is wrong with them

I bought the bike used so I am ot sure of past use, and I habe tried bleeding 5 times before getting to a point where they are starting to work.

I think I have screwed the bleed screw too tight and also I have put a lot of pressure during the process.

So when i follow the pdf, using a recipient on top, when i unscrew seringe on the bottom fluid comes out before I can replug it with the bottom screw. Why this screw is not like on cars I do not understand sonce it works great on my car.( yes you can fill and screw in at the same time)


So I have better results loading from the top but I have to engage the brake lever fully and apply huge force on the seringe to make the lever go back out, then I remove the seringe and loose a lot of fluid and put the screw back in.
And the result is just ok.

I cant understand why this process is so difficult and the result so bad, any advice can help me thanks

here's the best solution to your problem...
Search: Shimano MT200 MTB/E-Bike Hydraulic Disc Brake Set
under $70 US, on Ebayt or Amazone....

get them, PROPERLY install them, Do NOT try to bleed them... and CLEAN Your Discs.
enjoy riding your bike.

Proper installation nearly always means trimming the brake lines, which means, bleeding.

The Tektros are pretty good units if they're bled.

New brakes or old, they're going to have to be bled. Take the bike to a shop and have them do it. First, if the fluid is old and grimy/burnt, it will need to be flushed. They'll do it. Second, if the calipers have secret air pockets, they will find them and flush them out. Third, they know what they're doing, and they might explain what they're doing while you watch.