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94 hnda civic ex d16z6 engine anti lock breaking system..so this happens usually wen im down hill waitin for a light. or even now flat wen im waitin for a light, or wen im steppin for while on the break- all of a sudden da break pedal becomes lose and i have to step in more or else da car will move. break fluid is fine i startd to think it could of been air on my lines. but asoon as i step on the break it works fine just wenn i have my foot on waitin for sum x i gtta like pump it 2 or 3 times so it can stay tight. so u guys think it can b the master cylinder? or air in my lines?
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Try changing the brake fluid. Do a visual
inspection of pad life.if drums in the rear.
check that they are adjusted correctly.Air in the lines will cause a spongy pedal, it won’t cause a firm pedal to just drop. Are you loosing brake fluid? If you are then there’s a leak somewhere. If you are not them it’s probably a bad master cylinder.
im not losin brake fluid, and i did try changin da fluid also. front break pads are new and rotors.. rear breaks do need service.. n yes i believe its not air in the lines im thinkin it is a bad master cylinder..now another quest. how do u kno if break booster should b changed?
Park the car on a clean and dry spot. Depress the brake pedal with a spngy/bent stick so that the stick will provide continously pressure to the brake pedal. Go take a cup of coffee. Then check under the car for little pools of brake fluid, check the interior part of the rims for brake fluid and (if possible) check along the brake lines for wet spots (leakage through a little rust hole in the brake line).
It looks like you either have an internal or external master cylinder leakage. Check floor matting under the pedals for wet spots and check the area around and under the master cylinder in the engine compartment. If leakage in any of thees spots, then you have an external master cylinder leakage, and you could probably solve the problem by just replacing the master cylinder external seals.
Otherwise you hava an internal leakage. Replace the master cylinder so that you will have all the time you need to rebuild your old one.
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