If the problem is the break fluid, why did it get worse all of a sudden? Sounds l Iike a leak or a bad master cylinder. What exactly was replaced, and who diagnosed the problem and did the work?Yamaha mx49 sounds
I replaced just the rotors and brake pads. I did the work myself. It is a Hyundai elantra withmiles. My mechanic diagnosed it because of vibrations during hard braking. Describe how you cleaned the new rotors. Not cleaning them thoroughly is about the only mistake you could have made. How many did you do? You may have to do two more if one was all. What brand of brake pads did you buy and how much did you pay for them?
Are they semi-metallic, ceramic or organic. Is the brake pedal actually going all the way to the floor? I suspect you did not follow the break-in procedure for new pads. I would pull the wheels and check for a bad surface on the rotor. Might need cleaning. Then follow the usual break-in procedure, hard stops from 20, 30, 40 mph, etc. I am just an amateur who really loves the idea of fixing his own car. So I looked up a few videos on YouTube and felt confident enought to do it.
How do I clean them? I did about four hard stops. The brand is duralast and they are organic they costed 22 bucks. Vdc yes then brake pedal does go all the way in when driving over 45 and I want to make a hard stop. Luistruji From your second post, it sounds like you indeed ARE able to press the brake pedal to the floor.
That fact indicates you have something wrong in the hydraulic system, and could be as simple as air in the system, or as BustedKnuckles wrote, a bad component like the master cylinder. Others here will point you to finding the problem. Meanwhile, as mentioned by VDCdriverdo not drive the car in this condition. And maybe this is another clue. Cleaning brake rotors: Sometimes you get the obvious ones that have a coating of oil on them and you know what to do right away.
You have to clean the shiny surfaces that contact the pads and not worry about every last part of the rest of it. My comments are obviously not all-knowing and come from brain cells that have been exposed to a lot of spray painting of car models in a non-ventilated basement.
I try to pay attention to my brake jobs because I do have to stop the truck now and then. The brakes worked for years before I traded the truck. That kind of thing seems like an impossibility but it happens more often than I care to think about.
It looks like you bought parts as good as the rest of us get. Oops, just read the comment about Duralast brake parts and organic means asbestos. Also, I believe that the master cylinder may have quit on you. Did you check the fluid in the reservoir to see if it is low? Have you ever changed the brake fluid?During these challenging times, we guarantee we will work tirelessly to support you. We will continue to give you accurate and timely information throughout the crisis, and we will deliver on our mission — to help everyone in the world learn how to do anything — no matter what.
Thank you to our community and to all of our readers who are working to aid others in this time of crisis, and to all of those who are making personal sacrifices for the good of their communities. We will get through this together. Updated: December 31, References. The brake system is the most important safety feature of your vehicle. Unfortunately, there are many things that can go wrong with your brakes.
Brake pedal goes soft after pad replacement
All these problems require immediate attention, but first you have to find out exactly what's going on with your brakes. If you hear a screeching, metallic sound when you apply your brakes, the pads are probably wearing out and need replacement.
If your brake pedal feels soft and doesn't stop the car right away, you may have a fluid leak or air in the brake system. Finally, if your pedal feels too stiff, the vacuum booster could be failing. If you discover any of these problems, take your car to a mechanic as soon as possible to have them fixed. If you have trouble with your car brakes, there are a few simple things to check before you go to a mechanic.
You may need to replace them. Open the hood of your car and check the brake fluid reservoir for leaks or insufficient fluid. You may also spot a leak under the car or pedal after pumping the brakes a few times. If you have a fluid leak, get it fixed by a professional mechanic.
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Did this summary help you? Yes No. Log in Facebook Loading Google LoadingMy dad and I just changed my front brake pads on my Dodge Stratus. We put the new pads on, we also changed out the Pistons Rubbery tube with a metal piece inside We put the brake back on the Rotor, made sure the brake was positioned right, and put the wheel's back on.
Then we put new brake fluid in had a lot of brake fluid drip out Started the car, and did many brake pedal pumps like the instruction told us too The brake pedal went straight to the floor So my dad thought we might need to bleed it out, so we did and nothing new Still no brakes what so ever! Could someone please help!
You're not done bleeding brakes yet The "pistons" are called calipers. Question 1. Did you replace just front calipers? If so start bleeding right front first. Make sure Master cylinder is Full. Master cylinder is where you put fluid Then Pump brake pedal about 10 times and hold down. Loosen bleed screw a bit on right caliper.
Fluid should come out, no air. Re tighten and repeat until just fluid comes out. Do same with left side until same outcome. You should start getting pedal pressure after several bleeding attempts. If you do it like this you will get brakes back. Make sure and keep checking master cylinder. How much fulid did you lose from the master cylinder doing the job?
Answer Save.A Toyota 4Runner was stopping fine. A mechanic informed me that the brake pads were worn down. After the pads were replaced and bled the pedal sinks lower than before and the car requires more pressure to stop.
I can pump up the pedal after 3 pushes. I took it back and he has since re-bled the brakes but the pedal still sinks low. Any suggestions? If it hardens when it pumps, you still have air in the lines or cylinder s. He simply did not bleed the brakes totally. Does your 4Runner have rear drum brakes instead of discs? If so, worn or out of adjustment rear brake shoes can cause a low pedal and even mimic a failing master cylinder. The first time was many decades ago and I seem to vaguely remember it being a Toyota.
The car owner had replaced rotors and pads on the front along with the master cylinder and still had a garbage pedal that would sink halfway to the floor before taking hold.
The rear brakes looked fine but needed adjustment. Adjusted the rear and the pedal firmed right up. A larger volume of fluid needed to activate wheel cylinders on worn or out of adjustment rear shoes as compared to the fluid required to move caliper pistons on pads.
Odd, but true. It is just after this was done that the pedal sinks and you have to push harder to stop. He says he bled them twice. It has been several months since it was done and no change. I will get someone to adjust the rear brakes. I wonder if it could be the master cylinder? The old 2 man method where one guy steps on the pedal, and the other guy cracks open the brake bleeder line.
Out of those 3 methods, the last one is the one I personally least prefer, because it ties up 2 mechanics. The piston travels much further than it normally would, causing it to snag.
It just may be coincidental, but it sounds like its time. Pump the pedal repeatedly to get it as high as possible and then hold continuous pressure on it for a minute or two. If the pedal sinks at all with no fluid leaking out anywhere the master cylinder is most likely failing as BK mentioned. An aging and worn master cylinder will often fail when bleeding the brakes. It sort of sounds like the master cylinder is bad.
This can happen when replacing pads, during the bleeding process, esp if it is done by pushing on the brake pedal.
Whenever I replace the pads on my Corolla, or even the shoes on my Truck, I rough up the surface of both the pads and the discs or drums using some grit al-o2 sandpaper.Squeaky brakes are a serious automotive annoyance. But are squeaking brakes dangerous? How much does it cost to fix them? We've got your answers right here.
Don't expect brakes to be totally quiet—sometimes, they're going to make some noises. Don't panic, because a squeaky brake can stop a car just like a silent one can. What causes the squeal? Modern brakes use a cast-iron disc squeezed between two brake pads lined with friction material. Under the right conditions, the disc, the pads and the caliper they're mounted in can start to vibrate—in exactly the same way a violin's string vibrates when stroked by the horsehairs on the bow.
Most brake squeals occur at a single discrete frequency. The speed of the vehicle and how hard you press down on the left pedal will only change the volume of noise, because the pitch is controlled by the stiffness and mass of the pad and disc.2 Reasons Why Your Disc Brakes Don't Work
We can try to damp out the noise, or simply change the resonant frequency of the whole arrangement until it stops singing in any audible frequency.
Here's how. Many brake pad compositions will make a swishing or grinding noise for the first few stops in the morning until the pads warm up and drive off any moisture they've accumulated overnight. Ever notice a hissing or grinding noise on some rainy or dewy mornings? It's the pads sweeping a thin film of rust that's formed on the iron discs, and it's perfectly normal. In the past, brake pad friction material relied heavily on asbestos. Unfortunately, asbestos tended to give asbestos workers and brake mechanics lung cancer, so the industry has almost completely changed over to less dangerous alternatives.
Kevlar is one material that's seen a lot of use, but it tends to be dusty. Improved brake performance is more important nowadays because of increased safety requirements and equipment—and the extra road-hugging weight that comes along with these.
That leads to the increased use of metallics and ceramics in the brake pad friction material. And this stuff can make the brakes hiss or even grind a little as you slow down.Cisco router keeps rebooting
It's a small price to pay for increased performance. So all pad noise is fine, right?I just changed the front brake pads on my mercury cougar and I also turn my routers. I pump my brakes and then I went to test drive the car. I have to press the brake pedal all the way down to brake. Its brakes really soft and slow. Before changing them the car use to brake good but it was jumpy. Could it be that the lines have air? I didnt do anything to the lines and so I dont think it would be air.
And the fluid level is at max. I have tried pumping them several time with the car off and on and it just stays the same. Another thing you might check, did you get any grease, oil or anything else slippery on the rotors or pads when you installed the brakes? If you did, you'll need to take them apart and use solvent to clean the disks and install new pads. If no lines were disconnected then they shouldn't need to be bled.
I would look at the work you did on the pads and figure out if anything is slipping or if the caliper slides are somehow jammed. Changing the brake pads is not too hard. The first thing you do is raise the truck and support it.Craftsman air compressor
Remove the brake caliper and the old pads. Use a C-clamp or something similar to push the piston back in. If your truck has servicable wheel bearings, you should re-pack them with fresh grease, also the rotors should be machined to give you optimal brake performance. But it does sound like you have either air in the system or a leaking component within the system.
What can it be? Update: there is no fluid leaking that I can see. Answer Save. Favorite Answer.Getting pregnant meaning in urdu
Like everyone else said, check for leaks, bleed the system. Start again bleed your brakes completely starting from the furtherest away from your master cl, then working closer to the cl doing the last one,but when bleeding each wheel it takes aprox 6 to 8 pumps on the brake peedle,untill all the very small air bubbles are out they are so small can hardly see with naked eye,do the same all four wheels, keeping the resavour on master cllinder high as you are doing it, and tightening the bleed valve s on cylinder tight when the brake peedle is on the floor,in down position, you will need a couple of pints fluid before you start.
How do you think about the answers? You can sign in to vote the answer. Changing the front brake pads shouldnt cause air to get into the system.Blk 151 yishun
Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles.
It only takes a minute to sign up. I just bought some new brake pads for my caliper brakes on a bike I am fixing up and when I apply the brake, it takes at least 10 feet to stop no matter how hard I apply them; basically I can't get the wheels to skid even when I try.
I tried tightening the brake pads to be closer to the tire but the problem persists. Is it just the case that my bike's brake mechanism sucks?
Or is this a symptom of something else? There are a few things to do when your brake pads aren't stopping your bike well: -It could just be that they're new and haven't worn in yet, rub some sandpaper against the braking surface of the pad to remove the surface layer. Then use something to clean it to get off the lose rubber and grease from your hand.
This can also happen on old pads with plenty of surface left, the pad can "glaze over". This hard layer can be removed in the same way. Clean the rim and the pads with hot soapy water and leave to dry naturally. If the pads were very cheap you could just take them back if these methods don't seem like they'll work. You might as well try the washing one because you're bit altering anything and they would still take the pads back.
Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. New brake pads, very slow to stop Ask Question. Asked 2 years, 6 months ago. Active 2 years, 6 months ago.
Viewed 4k times. S1r-Lanzelot S1r-Lanzelot 1 1 silver badge 6 6 bronze badges. Could be cheap hard pads.
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