Check your brake fluid.
Cars brakes go floor.
The final reason for a brake pedal to go to the floor is failing axle bearing.
Brake fluid runs throughout the brake lines.
The leak may coming from a brake line or one of the brake calipers on your vehicle.
Without brake fluid your car would not be able to stop at all.
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When the engine is started the brake pedal goes almost to the floor will not stop car.
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3 hoses lines pads ok.
2 changed master cylinder bled system several times.
Brake fluid is a compressible hydraulic liquid used to move or apply force on the various components of a car s braking system.
Brake pedal goes to floor common reasons leaking brake fluid brake fluid is a car term you will hear a lot and must familiarize yourself with.
Technically there are two main causes that would make the brake pedal sink all the way to the floor.
If you step on the brake pedal and it has little to no pressure and goes all the way to the floor especially if you re getting no braking.
If it s low top it off to the mark on the side of the reservoir.
One of the reasons is the brake system loses pressure from an external brake fluid leak.
1 leak from brake line or brake caliper.
4 replaced power brake booster check valve and filter.
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If the brake master cylinder is full with approved dot 3 brake fluid and the vacuum line that attaches to the brake booster is in place and not leaking or disconnected at either end check for leaking fluid on all 4 tires if you find no fluid at the tires indicating a caliper is leaking then the problem is the master cylinder being bad.
Reasons your brake pedal goes to the floor.
No brake pressure pedal goes to floor.
Low brake fluid level.
5 engine has good vacuum and idle.
Brakes go to the floor when car is running and shut off thier are no leaks in the lines at all we have tried bleeding posted by lilmansmom11 on oct 21 2010 want answer 0.