Very common, as long as the brake pedal comes back up after the engine is started its good. It takes a second for the brake booster to build up pressure.
replace brake booster
soft peddle feel maybe from a damaged brake master cylinder. this pressurizes the peddle, and if there is a leak in the cylinder it might feel soft or flop all the way to the floor.
Press and release the foot peddle that is located on the floor
A leak in your brake line, or very low brake fluid, both of which are extremely dangerous and should be fixed at once.
If your brake peddle goes to the floor, you have lost brake fluid from your master cylinder in the engine compartment. Check your rubber brake hoses at each of your wheels, look for any signs of leaking brake fluid at your wheels, connections,lines, and master cylinder.
a leak or a bad master cylinder
If a truck has a clutch brake it would only be used when coming to a complete stop. By pushing the clutch peddle completely to the floor you would apply the clutch brake. This stops the clutch disc from spinning making it easier to shift into 1st or reverse gear. Normal shifting while driving you would not need to or want to push the clutch peddle to the floor to activate the clutch brake.
Low brake fluid, drums/rotors in need of replacement, pads in need of replacement, air in the brake lines, worn master cylinder, brakes out of adjustment... all possible reasons.
first check uour fuses in the right front floor column. then the break switch on the break peddle,
If bleeding rears and bleeder is open and peddle wont go to the floor try a front bleeder to see if you get results. what did you do to have to bleed them?
you might have fluid leaking before that.. lots of press no volume
yes you can but you got to make sure you don't pinch the rubber booster or get the wrong size for you brake system. I say the level of expertise is medium. If it is too big you will have a brake peddle that will stick to the floor and you will manually have to pull it back up. If it is too small you wont have the braking power you need.