Hi, I use a clear aquarium tube n a bottle to catch the dot 4 fluid. I saw a huge air coming out from the MC only. Nothing or no air when I bleed from the caliper. Technique I use: Pump, pump pump, squeeze the brake lever, slowly crack the bleeder about 1/6 open, still squeezing the lever, then close the bleeder. I did this to MC, follow up by left caliper, then right caliper and back to MC.
I didnt see any air from the caliper, but when I bleed the MC there is air. I take it to the mechanic after I cannot figure it out anymore, same thing, air in the MC. No leaks mean no brake fluid leaking. All this is the post recall MC and SBS brake pads.
Now, we thought it was the MC, so the mechanic borrow his working condition MC and install it on my ride. Same thing happen, front brake went spongy, bleed the MC, and the calipers again. Only found air in the MC. So, my thoughts either the mechanic MC is faulty or something wrong with my line or caliper or rotor ? Remember that, the brake went spongy when it is sitting, it was perfectly fine when we tested while riding. Tested mean we brake the crap out of it, endo, hard braking, u name it.
Looking for some solution out of this ordeal. Thanks guys.