Brake Fluid Pressure Not Building after Service

Hi everyone,

I just finished replacing my front driver-side brakes (both pads and rotors), and I am pumping the brakes to build up pressure, but for some reason pressure is not building. The pedal has somewhat of a resistance, but not as much as before.

It is my first time servicing my own brakes. Before removing the caliper, I leveraged it all the way to compress the piston, so when I finished, it was not necessary to compress the caliper piston. I simply placed the caliper over the rotor and the bracket. It fit perfectly, so I just screwed the bolts in. Everything worked just fine.

I applied caliper grease to the caliper pins, but when I screwed the bolts in, the pins were not spinning. This was comfortable to put the screws in, of course, but I am not sure whether the lack of spinning means I haven't applied enough grease. The pins were covered in grease throughout, I thought.

I also removed the cap of the brake fluid reservoir before starting. I put it back on, and the level is above the max.

Any ideas why the pressure night not be building?

Thank you

EDIT:

I put it on drive, and I can stop it. It works. But it is making a bit of noise when I push the brake, like an old door in an old house in those horror movies.

EDIT 2:

I took it for a test drive. It works. Now I'm just dealing with this noise.

Thank you

 

I wanted to do them one at a time precisely because it is my first time. I'm going to do the passenger side one next

I'm not sure I completely understand your question, but I never covered the piston with anything. Before removing the caliper, I inserted a flathead screwdriver between the caliper and the outer side of the rotor, I leveraged it, and the piston got compressed. I could see the pins going into the tubes and pressing against the rubber boots. When the time came to put the caliper back there was no need to compress the piston. It fit right in. I had the cube tool ready, but there was no need for it, or for a C-clamp.

It's fine. Apparently the pressure was enough, or more similar to what it was before the job than I had thought. I took it for a test drive, and the brakes are working. Now I do have this noise, though, like an old door in a haunted house, when I push the brakes, unless I push very soft.

Awesome, thanks for that.

 

Got you. Thank you very much for that. I'm having trouble now with the passenger side caliper, because one of the pins is stuck (Also see the rubber boot is broken). As a result I can't compress the piston before removing the caliper, so I'll have to use a tool when putting it back on. I'll put something between the tool and the piston. Anything in particular that could be best to use?

A piece of wood maybe...