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Yes. You need to get all the air out if the system

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Q: Do brake system need to be bled after replacing lines?
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How do you restore brake pressure after replacing back right caliber on 2000 Lincoln ls?

the brake system needs bled. meaning the system has air in it and the air needs removed. through the bleeder valve


Why would the Emergency brake light stays on in 1994 voyager?

You have air in your brake lines. Have the brakes bled.


How long does it take to change a brake master cylinder on 306?

Master Brake cylinder replaced and lines bled-how long?


Spongy brakes on 1990 ford ranger?

May have air in the system and have to be bled Check the flexible brake lines (front) to make sure they are not ruptured and are ballooning when brakes are applied


Why does brake pedal go to floor on 1989 4x4?

check your brake fluid level. its probably empty for some reason...leak? If the fluid level is correct than you most likely have air in the brake lines and will need to have the brake lines bled.


How do you adjust the rear brakes on a 1990 Nissan pick up with new brakes and they have been bled and pedal goes down almost to the floor?

If your brakes are new and the system has been bled, your next step is to see if you have a leak in any of your brake lines and also check your brake master cylinder to see if it's working or not.


Do you need to bleed the rear brakes on a 1987 dodge Dakota?

If you suspect that there is air (or other contaminants) in the system, or if the lines have been disconnected for any reason, then yes, the brake lines need to be bled. If you've only replaced the brake pads/shoes, etc., then there is usually no reason to bleed the lines except as indicated above.


Why is vehicle brake bled?

they are bled to remove air out of your brake system. bleeding prevents you from having mushy brakes or your pedal going to the floor. it also makes the pedal tight and more sensitive to your feet.


What would cause the brakes not work right on a 1992 PF after replacing master cyl. all the pads cal What is the part under the passanger side on frame where the brake line runs to before rear end?

The brake hydraulic lines may still have to be bled or you may have gotten grease on the rotor.


Why does the brake pedal on a 98 grand prix feel hard?

Usually when a brake pedal feels more stiff than usual, there is a vacuum leak. The brake lines probably should be bled.


How do i fix spongy brakes on a landrover?

Spongy brakes on any automobile are usually caused by air in brake lines. The lines need to be bled according to the owner's manual.


What causes spongy brakes?

"Spongy" brakes on any car are an indicator of air in the brake system. The most common way for air to enter the ststem is if the brake lines are disassembled during brake repairs. If your brakes have not been serviced, the most likely explaination is that you have a leak somewhere and you have depleted the brake fluid in the master cylinder reservoir. ADDING MORE FLUID WILL NOT HELP. Once the fluid is depleted, the master cylinder pumps air into your system. Regardless of the source of the air, the system must be "bled" i.e. air sucked out of the lines. If you do not know why you lost brake fluid, find the leak and fix it first.