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So anyway, my front brakes had been feeling as tough they were putting sufficient pressure and they seemed to be a little stuck as the front wheel did not spin freely in released position. So I decided to clean my caliper pistons and bleed my brakes.
Turns out I was correct and a couple of the pistons were stuck. Problems started to arise when while spinning the pistons to clean one of them came off and I lost some brake fluid. So I went to autozone, got some dot 3 brake fluid and one of those Mityvac brake bleeding kit.
One of the calipers seem to have no air, but the one whose piston came off seems to have some air in. I spent about an hour pumping the hell out of that brake line and refilling the fluid and while I can tell that I got some pressure (which I imagine if to the caliber whose piston did come off) I can tell that I still have air in that line.
I understand that if too much air is coming out of the bleeding tube than I might have air coming in from the outside (which is a big no no). However, since I lost a lot of fluid when the piston came off I thought I makes sense that I have to spend a lot of time bleeding the line.
Nonetheless, my neighbor happens to have one of those air compressor brake bleeders, which I think is the best thing to try next. I'm hoping that bleeding the line with the air compressor tool will solve my bubbly problems.
Nonetheless, I was wondering the following:
1. When I was cleaning the caliper pistons I inadvertently pressed a couple of pistons from the outside and left a small mark of those pistons. Can you take a look at the attached pictures and let me know if they could be the cause of air coming in? I have not noticed that I'm loosing fluid through the pistons (or anywhere in the line for that matter) so I suppose that that is a good sign.
In short, I believe I have pressure on the caliper whose pistons/lines remained intact however I believe that the caliper whose piston came off is the one that still has a lot or air in. I am hoping that neither one of the calipers have leaks but I'm unsure how to diagnose that other than looking for fluid leaks.
Thanks a lot,
Eddie
Also, there is a small nick on the outer plastic of the steel brake line so I'm not sure if that could be relates in some way. There is no leaking observed at this point.