QUOTE(VaccaRabite @ May 4 2020, 09:26 AM)
I'm going to echo what others here have said:
Do the inspection.
Bleed the brakes and pay attention to the state of the brake lines. Feel the entire length of the rubber line. If they are mushy anywhere or bulged then replace them with new rubber lines. Start with this and if that does not fix it, start looking into the the other stuff Chris mentioned.
Your brake pedal should be very firm when the brakes are properly functional.
Many times soft lines swell inside, making the id smaller but look normal from the outside. If you don’t know or can’t remember when they were last replaced, it’s time to replace.