Brake Pedal Goes To Floor After Bleeding The Brakes Many Times
Well before I opened the brake line, the pedal seemed firm like it normally should. Bleeding your brake system helps get rid of those air bubbles in the system. Performing a brake fluid flush prevents this gradual decay in the effectiveness of your braking system. Brakes go nearly to the floor when pressing brake pedal before engaging and stopping vehicle. Please forgive me if this is a common issue, but I tried searching the forums for a specific issue to mind to no avail. then bleed the rest as usual with engine off. For years, a Japanese inventor has argued that this most basic of car designs is dangerously flawed. It's amazing what you can get away with, actually. Have yet to replace the master cylinder, waiting for someone more experienced to take a look at it. But the brake will only start working after push it 5% deeper compare to a new car. Do that twice while making sure the MC is constantly filled, should be good to go after that. ) If your vehicle has power brakes and stopping seems to take excessive effort, you may need to have the power booster replaced. If the brake pedal is initially firm, but then sinks to the floor, check the system for fluid leaks. Plugged both lines at master cylinder. After doing the job I had a buddy help me bleed the brakes (Pump and hold method). The brakes though are not engaged when this happens. This will remove the remaining air from the brake system. •If you have performed a brake master cylinder bench bleeding on this vehicle, or if you disconnected the brake pipes from the master cylinder, you must perform. Brake pedal unexpectedly goes to the floor at 60 MPH! Then you need to read this before it happens to you. Changed all steel line at rear plus calipers and brake hoses. The pedal goes straight to the floor when I press on it and I receive no stopping power. Evaluate the feel of the brake pedal before attempting to drive the vehicle. After more checking I found that the brake lines on the drivers side frame rail were rusted and had failed as that area was covered in brake fluid. I replaced my brake pads this morning, and now my brake pedal goes slowly all the way to the floor? It's a 99 mustang, When the car is off and I pump the brakes I get pressure to normal where the pedal was before, but as soon as i turn the car on the pedal slowly goes to the floor. But a mix match of aftermarket and nissan brake parts do not work, been down that road too many times. Make sure the brake pedal stroke and free play are adjusted correctly. After bleeding the brakes I have a good solid pedal just as it should be. This time I was going only half way down with the brake pedal. Air bubbles in your brake line. (Did brake pads and rotors myself, saved about $400. TAMANA, Japan — Two pedals, inches apart, one for gas and the other for brakes. Replaced all four pads/rotors and performed a brake fluid flush, now my brake pedal isn't as firm as it should be, and it drops to the floor under constant pressure. When bleeding rear wheels, the pedal will go to the floor when the bleeder is open. brought vehicle into shop and checked over, pedal is soft, if you pump it several times, it holds breifly and then fades away, the rear brakes were junk, there were chunks out of the rotors, replaced rear brakes, there are no lines leaking on vehicle, replaced the master cylinder. The brake pedal travels all the way to the floor and is SUPER soft. Didn't even change the hoses, just did a straight bleed during a brake job. We fixed that and then had to bleed the breaks a ridiculous amount. If the brake pedal is spongy, bleed the system again. The pedal doesn't go to the floor after pumping it. Note - you will have NO brake pedal doing this due to the vacuum and the pedal will go easily to the floor. I still think you need to bleed the brakes again. Clamp the brake flexsys off one at a time and try the pedal between clamping, if the pedal is ok after camping one off then the problem is in the last one you clamped. fluid stops flowing while bleeding. brake pedal goes to the floor. I hadnt used the car in a few days and just when i was headin into work yesterday morning I pressed the brake pedal which was very loose and the car didnt come to a halt like it normally did. So I have no idea what it could be now. I did this for both back brakes and did see a few very small bubbles but nothing big. 8L; Engine Oil 3. 4 …change the calipiers,brake hose, booster was leaking when pedal was pressed,new master cylinder was replaced twice thinking it was a bad master cylinder from auto zone. I believe they call this "low pedal reserve". If the brake pedal goes down farthest the first time and then gradually rises on the 2nd and 3rd press this indicates an airtight brake booster. Here's an additional reason a brake pedal could go all the way to the floor: a bad brake booster. Technician B says that most integral ABS systems use the power steering pump for the pressure necessary to apply the brakes. How to bleed your brakes by Mike Fishwick Article in ' General Maintenance ' published by GazHyde , Mar 23, 2014. I suspect my pump may be worn out too after 16 years and 180,000 miles!. Brakes feel soft and pedal goes almost to the floor when you want to really stop. When bleeding rear wheels, the pedal will go to the floor when the bleeder is open. Thanked 35 Times in 33 Posts. So I repeated the process 2 more complete cycles, (pass, drive, pass drive) - after each time making sure fluid was full. watching for leaks , there were NO leaks. Leave everything tightened, engine off, and just quickly pump the brake pedal completely to the floor, for about 25 times. I have ruled out brake bleeding and when car is off it has a solid pedal within normal limits. but I don't feel like I can "lock em up". The back brakes are low, but in good condition, not like the fronts at all. If the vacuum system is operating satisfactorily, the brake pedal should move toward the floor. then i pumped it once, and went back hard. That's when I took it to a different brake shop; $55 bones to them to flush bleed and adjust, and on this weekend's run same problem. Still does the same thing. Did as you suggested. I have replaced 3 disc brake calipers on my 2001 pt cruiser. With the truck off I could pump the brakes 3 or 4 times and they would be solid as a rock and hold. The brake pedal feels spongy when brake fluid is not flowing properly. Page 2 of 2 < Prev 1 2. It still stops. Another guy reported that the rubber gaskets/fittings on the top of his master cylinder that take brake fluid from the reservoir lines are moist/weepy. Bleeding technique is the good old 2 person pump them up, hold pedal, open bleeder, pedal goes to the floor, close bleeder, repeat the process. i also have problem with my brakes: with engine running, brake pedal slowly goes to the floor,creating mushy/spongy feel. My Sienna 2005 experience intermittent complete brake failure 3 times within 18,000 miles,the brake pedal goes to the floor and it does not slow down, so I coast until I stop. Fiesta (2009) Zetec brake pedal travel The brakes work OK but the pedal can be pushed to the floor! Been back to the dealer 5 times I think Rear pads adjusted. alright well i put the new master cylinder in and bled all the brakes again for the third time in the past 3 days and the pedal when i pump it when the car gets stiffer but the second i turn the car on it gets spongey and almost drops to the floor can think of what it might be, brake booster, or maybe im just not bleeding the brakes good enough if someone could give me there opinion that would be amazing!!! thanks. Helper should hold the pedal at that level so pump will continue to run. The brake pedal travels all the way to the floor and is SUPER soft. Replaced the MC. Changed the front discs and pads on my V6 today now my brake pedal feels strange. At first, the pedal would go all the way to the floor, so I done some searching and found many post of people that had the same problem. I've seen too many master cylinders ruptured by having someone push on the brake pedal and allowing it to go all the way to the floor when bleeding. 2009 Mazda5 Brake pedal goes to floor - Intermittent First time it happened was when I was picking up the car from the Mazda dealer in the evening after they had closed over a year ago. Some procedures are as easy as pressing the brake pedal a few times and clicking a button on the scan tool; others will require you to open bleeder valves, which makes a real mess on the shop floor. Aug 14, 2019 #21. By Deanna Sclar. You can use an alternative spacer, if necessary. But the brake will only start working after push it 5% deeper compare to a new car. All this is to say that your brake system can easily be compromised causing erratic brake operation, soft pedal or evan total brake failure! Please be careful when working on the brake system as there isn't many options if your brakes do fail!. You would simply open a previously closed bleeder valve to let air and fluid out then close it shut. The air bubble prevents all of the force of the pedal from going to the slave cylinder and fully releasing the clutch. All-in-all we pumped the brakes about 10 times on each of the back brakes. To properly bleed the brakes, start with a couple of 8-ounce cans of fresh brake fluid. I was thinking air in the lines. So I did it the correct way this time, completely removing the cylinder from the car and bench bleeding it. I did a brake fluid flush in dealership and they only charge $75 and applied a 20% off coupon. If I press very hard abruptly it will periodically actuate the front brakes too and slow the car down normally. Because brake fade occurs when the brake pads are overheated, the phenomenon is only temporary and braking performance usually returns once the brakes have cooled down. Have your buddy press the brake pedal a few times. Brake Bleeding – Gravity, Manual and Vacuum Bleeding. Correct the leaks (if applicable) and then bleed the system again. it just goes all the way to the floor with only slight pressure near the floor ,, I can barely brake at all!! so i bought a new master cylinder and replaced it. One or two pumps, and the pedal is back to being stiff and brakes are working great. After you tighten it back up, only then should your partner pump brakes again 3 or 4 times and hold. No matter how many times we attempted, it was mostly air and spitting a bit of fluid each time. If I mash the pedal, the car will come to a sharp stop - testing on some sandy roads, the front brakes are definitely working - but the front pedal travel is WAY more than it was prior to the pad/rotor maintenance. If the master cylinder goes dry you must start the bench bleeding process over. However, when the car is started pedal goes down the floor. If you have performed a brake master cylinder bench bleeding on this vehicle, or if you disconnected the brake pipes from the master cylinder, you must perform the. My brake pedal occasionally goes to the floor and the brakes fail. How To Quickly Flush & Bleed Brakes By Yourself. Brake pedal goes to floor after bleeding the brakes many times start off by pumping the peddle 25 times with engine off bleed the abs system (usually has bleeder valves near/on control unit). Common brake problems, such as a soft brake pedal, pulling to one side while braking, or vibration while braking can have serious implications for your car's health (and your health, in turn!). How to replace brake master cylinder. Because brake fade occurs when the brake pads are overheated, the phenomenon is only temporary and braking performance usually returns once the brakes have cooled down. I replaced the master cylinder with a new one (bench bled it before installing) and bled all four wheels (LR, RF, RR, LF sequence). After brake bleed, pedal goes to floor. (energetic guitar music)– Hi, I’m Mike from 1A Auto. So then rear calipers were replaced, no improvement, he convinced me the master cyl was bad, so that was done, no improvement. November 6, 2018 Followup from the Pelican Staff: You likely have a faulty DSC hydraulic unit. If you forget to bleed your brakes, you can end up with a soft brake pedal and/or too much pedal travel. I don't see any air coming out of the bleeders, just nice clean fluid at all 4 wheels. We also bled the brakes after word. Comments: bleeding back brakes on 2005 bmw x5 4. There are many high points where air can get stuck, and the main cylinder sits almost level with the calipers, so any slight pitch in favor of the cylinder and you get air stuck in it. Soft brake pedal after replacing the brakes and rotors. A non-Toyota mechanic thinks it's due to malfunction of ABS. Then the process is repeated several times at each wheel until all the air has been bled out, be sure to keep the fluid level up in the master cylinder during this process. Hey guys ChrisFix here today I’m gonna show you how to flush your brake fluidI’m putting brand new calipers on my truck because the old ones are going badThey’re leaking and I don’t want to flush the old brake fluid into the brand new calipersSo I’m gonna flush the whole system with dot 3 brake … + Read More. I didn't bench bleed the MC before refitting I just connected it back up, filled it and bled the system as follows: N/S R - O/F R - N/S F - O/S F. If the brake pedal is intermittently going to the floor she should not drive the car at all until it is fixed. Brake pedal to floor even after flush and bleed I finally got to flush and bleed my brakes ala the DIY on scoobymods. Follow the vehicle’s manufacturer-specified bleeding procedure. Put fott on brake pedal. Has anyone had and solved this problem? Thanks in Advance. I, for one, if the quality of the job is good, happen to submit that 4 hours isn't outrageous to stand behind your job on a 20 year old 240 brake octopus mess/dual diagonal disaster. Brake pedal goes to floor after bleeding the brakes many times start off by pumping the peddle 25 times with engine off bleed the abs system (usually has bleeder valves near/on control unit). Try bleeding the brakes first and see if that cures the problem. I do have to admit in the process of bleeding the brakes I feel I went to far toward the floor with the brake pedal. I replaced my brake pads this morning, and now my brake pedal goes slowly all the way to the floor? It's a 99 mustang, When the car is off and I pump the brakes I get pressure to normal where the pedal was before, but as soon as i turn the car on the pedal slowly goes to the floor. The backs were mostly fluid no air. You'll have to have the assistant pump the brakes. Replaced master cylinder with new, no help. My problem is I don't get a firm pedal until the SECOND push on the pedal. These bulletins can help you troubleshoot a problem when a vehicle is in your shop and help you find a solution. My Emergency brake light stays on and my brake pedal goes to the floor. After releasing each block-off, we test the brake pedal height. The other system is the service brake system. Re: S60 D5 brake pedal goes to floor (no resistance) SOLUTIO Post by LeeV » 13 Mar 2011, 13:10 OK, I flushed/bled the brakes again and it was pretty much the same, so I admitted defeat and took the car (very slowly) to a local brake specialist. If the brake pedal is spongy, bleed the system again. After brake bleed, pedal goes to floor. I can still stop. Just bleed round the car again from the caliper bleed nipples. If the braking system ends up with large amounts of air in it, a complete braking failure is possible. I've bled the brakes several times after new lines, booster, mc, and rebuilt callipers. Hey All, While moving a friend my brake pedal got super soft and went, practically, to the floor. If the brake pedal is spongy, bleed the system again. The pedal was the same, but i heard to booster starting to leak so i replaced that as well. If the distance from the pedal to the pivot is three times the distance from the pivot to the connected piston, then it multiplies the pedal force by a factor of 3, when pushing down on the pedal, so that 10 N becomes 30 N on the master piston and 120 N on the brake pad. Re: Brake pedal goes to floor after hot lapping for 20min, and other track goodies I see that the rear seat bottom is easy to pull out. After I got the new one on and topped off the fluid up front I started the car and noticed no matter how many times I pressed the pedal it went to the floor every time and never built pressure. your Oddy definitely have Air pockets in the braking system that if the issue did occur right after the replacement. But as I’m stationary, resting my foot on the firm brake pedal, slowly the pedal starts going soft and slowly sinks to the floor. Might need to bleed your brakes. It does not go to the floor, just keeps moving until almost at the floor, then it stops and the brakes hold. Hi Guys I've got a major problem, my brake pedal has suddenly gone spongy to the point where i have to put the pedal to the floor & give myself plenty of space to slow General: Brakes, Lack of them, Spongy pedal from nowhere - The FIAT Forum. This can also happen if the pads are warped, damaged, or excessively worn. up vote 7 down vote favorite. Start car, pedal should move to the floor. Releasing the brakes lets some compressed air go. You should bleed the brakes, but you should do that anyhow after changing pads (or once a year - according to volvo). I am using a clear plastic tube from the bleeder nipple into a jar. The bleeder should be near the transmission and should have a rubber cover over the end of it, you will need someone to help you with this,take the cap off of the clutch master cylinder, then loosen the bleeder and have someone push down the clutch pedal and hold it to the floor, then tighten down the bleeder, then the pedal can be released from the floor, check the fluid level, repeat if. The air becomes compressed, absorbing energy from the system, instead of directing the energy towards pushing the caliper piston against the brake disc. Only use half at most of the pedal travel to pump up and bleed (sit your other foot under the pedal so it can't go to the floor), you've probably seen the crap and buildup in a reservoir, now think about it sitting in the bore and a rubber seal running over it a few times where the piston seal normally doesn't go. Brake pedal goes to floor after bleeding the brakes many times start off by pumping the peddle 25 times with engine off bleed the abs system (usually has bleeder valves near/on control unit). The brake pedal pretty much goes to the floor. I have adjusted the rear breaks and bleed the system several time using the two person system and a vacuum bleeder system. Brake Bleeding Issues - posted in VX220 Discussion: Changes all four brake hoses for braided ones today, and bled all four courners using the ezibleed system, and all seemed good. The master cylinder can be bled on the vehicle done it many times!!! same difference as doing it in a vise on a bench, take the brake lines off the master cyl install the bleed tubes and run back into the master,make sure master is full have a helper slowly push the brake pedal down slowly and release do this untill no more air bubbles are seen when brakes are pumped. 1) No fluid leaks 2) Changed master cylinder, bled system several times. Brake pedal goes to floor Hi, have just replaced pads, rear shoes, wheel cylinders springs on shoes etc, bled the system as I believe its supposed to be done, adjusted the rear wheel star adjusters, but pedal goes to the floor. Checked other side which both were recently replaced and di. Changed all steel line at rear plus calipers and brake hoses. This guide will explain how to bleed brakes on your car. Is there any way to tell which one might be causing the problem by how the car is braking? Right now when I step on the brake pedal it goes all the way to the floor. Flushing your brakes and ABS system (At home!) Jump to Latest Follow. so I test drove it. Pads worn thin allow for lots of fluid in the caliper because the pistons are poking out pretty far. The pedal was the same, but i heard to booster starting to leak so i replaced that as well. No brake work was done during this service visit. The two man method is to have the first man open the bleeder screw, the second man then presses the pedal to the floor and holds it there. Just as your brake pads wear thin over time, so can your brake fluid. High/low rev does not change my brake action. Otherwise you will need an assistant to pump the brake pedal while you open and close the bleeder screws at the appropriate times during this process. What I have done is fill the brake reservoir with fluid, cracked the bleeder valve on one of the wheels, attached a hand held brake bleeder and vacuum pump. My problem is I don't get a firm pedal until the SECOND push on the pedal. But sometimes, like any other mechanical system, it doesn't. Pump the pedal several times, wedge the stick, then go open the bleeder. The result is that the pedal must be pushed farther to the floor to take up this travel before the brakes engage. If not, pump five more times. Pressure brake bleeding is the best way to make sure you get all the air out. Brake pedal goes to floor Hi, have just replaced pads, rear shoes, wheel cylinders springs on shoes etc, bled the system as I believe its supposed to be done, adjusted the rear wheel star adjusters, but pedal goes to the floor. This is best done after gravity bleeding. This is to re-set the rear pistons to a proper location. when you step on it again the brakes. With the brake pedal all the way down, slightly open the bleeder nozzle. Brake pedal goes to floor w/ engine on. Put a 1 by 4 in (25 by 102 mm) piece of lumber under the brake pedal. To my mind that says it is perhaps better to get some help bleeding when you've got this stubborn sort of problem. After doing the job I had a buddy help me bleed the brakes (Pump and hold method). If your car has ABS, which is most likely, then you've got extra problems. R+R both front calipers. Spongy Pedal. Then we realized there was a busted brake line and we replaced that and then re-bled the brakes and kept fluid in the master cylinder reservoir. With pressure being applied to the brakes by your assistant, open the bleeder screw. i also have problem with my brakes: with engine running, brake pedal slowly goes to the floor,creating mushy/spongy feel. Learn more about the most common brake issues and their solutions, here. If the vehicle has never ACTUALLY had any brake fluid beld through the system since new, corrosion may have formed in the bottom of the master cylinder bore just in frnt of where the primary cups move to under braking. I believed it to be a weak master so i put one in and bled out the system. i have to pump my brakes to ensure adequate stopping power, otherwise pedal basically goes to the floor now and trips the brake light switch. I don't see any air coming out of the bleeders, just nice clean fluid at all 4 wheels. When the pedal is soft and spongy, your braking system is likely to fail soon. I didn't bench bleed the MC before refitting I just connected it back up, filled it and bled the system as follows: N/S R - O/F R - N/S F - O/S F. No brake work was done during this service visit. If the brake goes to the ground, then your brake booster is fine. - Two mechanics have tried new master cylinders but pedal still goes low - They suspect ABS module but the abs light never came on I would love to keep my car,could it be something else? Brake booster? Pedal feels like a really bad bleed, like there is air in the line but it has been rebled twice with the small result by two different garages. Dealing With A Low Brake Pedal. There's that much time to get from the brake to the go pedal. I replaced right rear brake caliper and bled all 4 wheels. If the master cylinder goes dry you must start the bench bleeding process over. This will get the caliper mostly full and the air out of the lines. Go to next caliper and repeat until all have been done. I inspected the rubber brake lines and checked them for swelling when the brakes are applied. Brake pedal goes to floor. Once completed the brake pedal gets solid after pumping a few times and will not release pressure unless I bleed it off. See the video "rear disc installation support" in our tech center to see the proper bleeding and caliper adjusting processes. No brake work was done during this service visit. Porsche 997: Why Does My Brake Pedal Go to the Floor? The brake system is one of those systems that needs to work 100% of the time. Had a leak on steel line over rear axle. Spongy brakes are a result of air getting into the brake system, which can happen from leaks in the. had to pump it multiple times and use emergency brake to halt vehicle. Then we realized there was a busted brake line and we replaced that and then re-bled the brakes and kept fluid in the master cylinder reservoir. Try bleeding the brakes first and see if that cures the problem. My wife's 2011 Ford Edge brake pedal goes to floor when trying to stop. Spongy Pedal. I bled my brakes and now the pedal goes to the floor all the time with little stopping power. I have a 1957 Studebaker champion. But if they do get very low, you might have this problem. 1999 Alero 3. The Brake pedal must be hard at all times in use. This first began in October 2010. A) With the engine not running, press and depress the brake pedal several times to remove any vacuum from inside the booster. Please forgive me if this is a common issue, but I tried searching the forums for a specific issue to mind to no avail. When this happens, I have to quickly lift my foot off the brake pedal and slam my foot back down. Start furthest from master cylinder and work to closest. My Sienna 2005 experience intermittent complete brake failure 3 times within 18,000 miles,the brake pedal goes to the floor and it does not slow down, so I coast until I stop. 7 – The Brake Pedal You put on the brakes by pushing down the brake pedal. Re: Brake pedal goes to the floor, need help I did not bench bleed the master cylinder and I know I initially bled the system wrong in the beginning. I described the bleeding method above, and I used Dot 4 brake fluid. The brake pedal still goes to the floor so I exchanged the master cyl. by vx_commodore » Thu Sep 10, 2015 12:14 pm The1 wrote: vac is the only way to go, i had done it various ways for years, after picking up one of these the other day on special $70 locally did my brakes, VS ABS, best theyve ever been. customer has been driving vehicle with soft pedal for a couple of months, he has been pumping the brakes to stop. A good indication of this condition is lack of fluid flow from the brake bleeders. Brake pedal was fine most of the time but occasionally it would sink to the floor while stopping and it would be hard to stop. (Started with air bubbles but once I was done, no air bubbles) So I have the car taken up to Midas to see if they saw anything. The brake system is pressurized by the master cylinder when the pedal is pressed. Replaced abs hydraulic unit with used unit, and no help, but suspect the replacement unit is faulty also. The front discs do not do anything unless I pump the pedal 8-10 times and then the front discs will stop the fronts from spinning. With the help of an assistant, they can pressurize the system for you as you go to each bleed nipple. My brake pedal will sometimes go nearly to the floor. As a side note: The Tomberlin brake system is awful when bleeding. Re: Brake pedal goes to the floor, need help I did not bench bleed the master cylinder and I know I initially bled the system wrong in the beginning. With the truck off I could pump the brakes 3 or 4 times and they would be solid as a rock and hold. Fluid will run out and if fluid is running out, air is not going in so no need to keep the hose submerged in brake fluid not to mention that the first time you open the bleeder, all the air in the empty hose would go into the caliper if that is how. I saw the other entries in relation to the above issue but with my Rav4, My brakes are working fine. After replacing the pad my Brake Pedal became soft and it goes close to the floor. The pedal goes straight to the floor when I press on it and I receive no stopping power. Replaced rebuilt master with new one and plugged both outlets. Also, make sure you pull the brake pedal all the way up when bleeding the brakes to make sure you get the master cylinder to move it's complete stroke. No brake work was done during this service visit. I did read online that these cars have a seal between the booster and the MC that can go bad so it might just be that seal, and not the entire booster. Next we would release the line block at each wheel, one at a time. The process of removing this trapped air is called bleeding, and it's an important maintenance task for many vehicles. If pedal falls away, go to next step. A few simple tools and an understanding of the system are required for finding the cause of a low brake pedal. When bleeding rear wheels, the pedal will go to the floor when the bleeder is open. Brake bleeding discussion in the Tractor Talk forum at Yesterday's Tractors. Releasing the brakes lets some compressed air go. If the problem persists proceed to Step 2. i also have problem with my brakes: with engine running, brake pedal slowly goes to the floor,creating mushy/spongy feel. I inspected the rubber brake lines and checked them for swelling when the brakes are applied. To test the brakes on the road, wait until there is no traffic, drive slowly for a short distance and press the brake pedal as you would normally. Place a piece of clear 3/16 inch plastic tube over the bleeder screw of the brake caliper you are going to bleed. They are installed bleed screw up, and were properly bled. Found outside pad worn down thus purchased pads and installed. ) If your vehicle has power brakes and stopping seems to take excessive effort, you may need to have the power booster replaced. Try everything. I can see brake shoes moving very little on wheels but pedal goes to the floor. I replaced the master cylinder with a new one (bench bled it before installing) and bled all four wheels (LR, RF, RR, LF sequence). You adjust it so the front brakes lock up just before your rear ones do. This needs to be done and held all the way through the next step. My wife's 2011 Ford Edge brake pedal goes to floor when trying to stop. Do not have a pedal at all, it goes to the floor. also have fully serviced and adjusted the rear drums. 2 PSI Valves - These valves are used in a disc brake system only and are required when the master cylinder is at, or below, the height of the calipers. If the pedal continually goes to floor and does not firm up then you have a lot of air still so leave bleeder open and push fluid out by pumping pedal. To get rid of the air, you’ll need to go through a process called “bleeding the brakes”. I have a very soft pedal goes all the way to the floor before I stop. bleed the brakes using the scanner. watching for leaks , there were NO leaks. The first couple of times I opened the bleed nipple, therefore, I pumped the clutch pedal three times in order to make the process go a little faster, because I knew that the first couple of times all I’d be doing was compressing air. After every session for Double Nickel Nine Motorsports, the race cars go up on four jack stands, are inspected and, if the brake pedal is at all soft, have the brakes bled. When bleeding rear wheels, the pedal will go to the floor when the bleeder is open. Also the pedal doesn't go completely to the floor, just way lower than I'm used to on most cars, and the car stops just fine. Top off reservoir again Now repeat the procedure at the left rear caliper. If the brake pedal goes all the way to the floor when you apply the brakes, another cause might be severely worn brake linings. Aug 14, 2019 #21. Tests to find causes of a low brake pedal. Replaced rebuilt master with new one and plugged both outlets. If you brakes feel mushy after a careful bleeding, check your pads. I could not find it. Problem is intermittent and brakes go back to working normal. Have your assistant pump the brake pedal a few times and then, hold firm pressure. Back when brakes were one simple hydraulic circuit, or even two circuits operating half the brakes each, it was relatively simple to get all the air out of a hydraulic syst. Pedal Travel improves after bleeding left front brake Replace combination valve with brass valve #25509419 and rebleed total system To properly evaluate pedal travel, apply brakes with vehicle parked, ignition off, and without power assist (depressurize accumulator with 10 brake applies). I've seen too many master cylinders ruptured by having someone push on the brake pedal and allowing it to go all the way to the floor when bleeding. Brake failure after changing pads. Spongy pedal. Any ideas would be helpful. Technician A says that the brake pedal should be depressed at least 20 times with the ignition switch off before checking the brake fluid level in the reservoir. You can repeat this process as many times as you wish for the same brake line). If your pedal goes to the floor, you have a problem. I bled the brakes three or four times with no affect. After approximately ¾ of pint has come out, close the bleed screw. Then with bleeder closed you pump the brake pedal 3-5 times and if it firms up then your getting close to having no air. Drums were turned smooth, brand new pads. Make sure the brake pedal stroke and free play are adjusted correctly. Very soft pedal after frong disc brake swap. 4 …change the calipiers,brake hose, booster was leaking when pedal was pressed,new master cylinder was replaced twice thinking it was a bad master cylinder from auto zone. after install i lost my pedal. When trying to brake the brake petal goes all the way to the floor. Once the rust eats through the line, you have a brake line failure as the fluid blows out and you lose your brakes. How to replace brake master cylinder. With that said, after the job was complete, during the first drive it seemed as though the pedal was too soft. Got in the car and started driving, brake pedal went all the way to the floor numerous times and consistently. If it is safe, drive the car at low speed, braking as needed. Start car, pedal should move to the floor. We did have to bleed the brakes after replacing the master cylinder. Start furthest away from the MC, then work your way towards it. Step Four – After you’ve affixed the fuel line to the bleeder fitting, you can go to the cabin and depress the brake pedal several times. I guess it doesn't take much air in the fluid to soften the brake pedal.