Car Brake Pedal Soft

Car has intermittently soft or spongy feeling to the brake pedal during what seems like no specific reason. There are no leaks in the brake lines or calipers. I would think with air in the lines they would be soft both on and off. Some of the causes of brake pedal vibration. Cars with anti-lock brakes may require a slightly different procedure on the rear brakes. Soft brakes, meaning a brake pedal that no longer offers the same reassuring pressure it normally does, can be an alarming thing to encounter while driving. How this system works: The "feel" of your brake pedal is created by fluid pressure in the master cylinder and the brake lines. The problem is that despite countless bleedings, the brake pedal remains very soft. After replacing master cylinder and still having the problem I decided that it could only be the brake booster so I replaced it, bled the brake lines one more time and it finally fix the soft pedal. Brakes still engage after some travel in the pedal, but nothing like before when it was pretty much immediately responsive. Update 2: oh, and the brake pedal comes back up after i depress it. This means that the brakes will have less "feel" to them and can (if not used properly) lock up your brakes during a hard application of them. Issues such as air in the lines, failing calipers or wheel cylinders, or a weak flex line can feel soft when you hit the pedal. com and get the latest information, as well as detailed specs and features. Five car the non-power brake pedal assembly must be used. hope you figure out the problem soon! i feel like i just tag along. I just did the front brake and the rear are pretty new. It almost goes to the floor when I press the brakes. Before beginning the following procedure check to make sure brake pedal free play is approximately ½” and air gap from booster pushrod to master cylinder piston is approximately. I was just curious what you guys think When my car is off the pedal is rock hard but when the car is running its very soft. I've also got this problem and have given up trying to fix it since the brakes and ABS all seem to otherwise work well. If you press the brake pedal until it is firm (engine running, while stationary) and there is still a little bit of 'bounce' in the pedal at that point, then braided lines can help. any thoughts before the trip to the dealer. Pedal sinks or requires pumping to keep your car from creeping ahead. On shift completion, engagement is just off floor, with the pedal feeling very soft after to the top once clutch fully engaged. I thought it odd. A soft brake pedal is the result of a loss of hydraulic pressure. The brake system uses hydraulic pressure and if there's a leak somewhere in that system, your pedal will feel soft. Ever since then I have had a soft pedal, and the pedal travels much further before it grabs. Open the bleeder valve and let the fluid stream out for about ten seconds or so. Jim Sikes’ Prius high-speed dash to fame or infamy is a media hype-fest, with wild swings in sentiment from Toyota bashing to Sikes trashing. it says the brakes must be. When I apply my brakes normally or hard, my brakes operate perfectly But when I apply the brakes slowly (i. With engine off, and pedal depressed few time (no boost) a medium/hard pressure on pedal doesn't result in. She sat in the drivers seat, pumped the pedal a few times then held it down, I loosened the bleeder screw, pedal went to the floor, tighten the bleeder screw, and then release pedal. Rear pads new are about 8-10 thick mm and can be driven till about 3 mm. A quick google mentioned braided stainless steel brakes. I am keeping both the original front disc brakes and the replaced GM, now rear brakes. The Haynes manual warns that master cylinder problems can be created by pushing the piston back. It's stops are short, smooth and controlled. B) On the last push of the brake pedal, hold moderate pressure on the brake pedal. Accessories; Car Care; Literature and Manuals; Decals; Paints and Dyes. Last week I finally took it back to the dealer who assured me it's working as it should, but didn't have another one available to try. The brakes worked perfectly up until that point. Since the brake job, I've been getting a squeak from the brake pedal and the pedal action is poor. If it is soft with the hoses pinched off, bench bleed MC(not with the little hose kits). I just replaced the brake pads a couple weeks ago but don't this has anything to do with it, but just in case I figured I should mention it. The B9 does have a somewhat soft pedal. EDIT: As a user pointed out, the brakes feel low and not soft. The brakes start smoking (and they smell bad). My wife has an '09 3. Your brake lines are designed to carry fluid to your brakes. If the brake lights go off then that is most likely your car brake problem. But first half of brake pedal travel became soft, without real brake power. How to repair Soft Brake Pedal in car or truck. A brake pedal that feels spongy, soft, or vague when depressed or goes all the way to the floor is a good cue to check for air in your brake lines. Te brakes were originally soft but i was under the impression that they were soft because the pads were worn out. With the car running and at a stop, I can apply the brakes and the pedal sinks as I press it down, there doesn't seem to be any resistance until near the end of the travel. When you get mud / sand / general muck between the discs and pads, it takes a couple of pumps to clear, during which time the brake pedal can feel soft. if booster is working, the pedal will go soft as it should for. One night while exiting an expressway, I pressed the brake pedal to slow the car down because the cars in front were coming to a stop. So that would mean booster is holding vacume??. The pedal had been acting a little soft the last couple months, but sporadically and nothing like what happened on Friday. Today he replaced me the brake pads and rotors with I bought Akebono Brake Pads and Centric rotors and today he installed it for me, Now after the replacement my brake pedal soft and when I try to make an emergency stop the pedal drops to the floor and the car stops slowly and not like before. If the brakes feel spongy, you should immediately have the car’s braking system diagnosed and take necessary actions because it creates a potentially unsafe condition when you are driving. We are a team of ASE certified mechanics that have created this guide to show you why your brake pedal goes to the floor and what you can do to fix it. Correct me if I'm wrong, but with key off after engine running, pedal feels soft, but after 2 max 3 pedal presses, pedal goes firm. Nice cheap upgrade. The brakes work and I stop but something isn't quite right. Recently, I noticed that when my car is cold, eg in the morning, the brake pedal is very hard to step. During normal use brake fluid can become contaminated and the master cylinder wears internally but only for the length of your brake pedal travel. Most domestic car manufacturers do this. remember you need to what they call seat your brakes to keep them from being inconsistent, you drive down the road about5 miles and stop and go often not braking hard enough to get the pads or roter's to hot , this will seat the pads and you will have a. On august 11, 2015, nissan north america, inc. After starting the car and pumping the brake pedal a few times, the brake pedal feel was still spongy, similar to when there is air in the brake lines. residual valve. First time it's ever happened. I understand it will be soft and not stop as quickly as a car but I don't understand why it is firm after a quick pump. hello, 2006 f150 5. low spongy brake pedal. Once it's clamped, start the car and depress the brake pedal. You should flush the fluid every two or three years, but it can be a moderately difficult DIY repair. Photo #2: If the car had factory power brakes the brake pedal pad was twice as big and had the words “Power Brake” imprinted on the pad. just got my rotors shaved and brake pads shaved now the brake is soft then goes back to normal then soft brake pedal - LotusTalk - The Lotus Cars Community Google search. , Toyota will recall a combined 180,000 vehicles in the Middle East, Latin America and Africa due to faulty gas pedals, says the Nikkei [sub. Open the bleeder valve and let the fluid stream out for about ten seconds or so. Did a 60-0 test and it took 3. Something that de-emphasizes, restrains, or plays down, as in The mayor put a soft pedal on this potentially explosive situation. Always start at the right rear. I took the car to a Sub dealer and after a test drive and checking the brakes over, scanning the ABS, concluded that everything is in order and that a "soft" pedal is a characteristic of the Year 2000. I understand it will be soft and not stop as quickly as a car but I don't understand why it is firm after a quick pump. Since I had a credit from some earlier work at a local garage, I'd let them handle it. Brake fluid converts the energy you apply to the brake pedal into the force required to bring your car to a stop. But it has excellent braking characteristics. The car does brake ok when driving. Sounds like the bmc might be bad with the soft pedal feel. The three types of vacuum brake boosters are the lever, disc, and tandem. After replacing master cylinder and still having the problem I decided that it could only be the brake booster so I replaced it, bled the brake lines one more time and it finally fix the soft pedal. The car is a 68 with power drums all the way around. I upgraded to StopTech SS lines, Carbotech xp 20/10 pads, new centric blank rotors, and motul rbf 600 fluid. On august 11, 2015, nissan north america, inc. feels like it goes almost to the floor. I have the stock fox booster/MC but I have a 5 lug swap with the sn95 calipers. The master cylinder is above the clutch pedal. Accessories; Car Care; Literature and Manuals; Decals; Paints and Dyes. Brake Pedal feels soft or goes all the way to the floor - This indicates you probably have air in your brake lines. If air gets into the brake lines, it can prevent brake fluid from flowing properly, causing the brake pedal to feel spongy or soft. Then press and release the brake pedal. The configuration can vary depending on the manufacturer. Ok, on to the WOW factor. This article applies to the Honda Civic/Del Sol (1992-2000). 2007 - 2014 Expedition & Navigator - Soft brake pedal, firm on second pump. When you're out of brake fluid, your brakes simply won't work. Thanks, the pedal is really soft. Comprehensive catalog of Pedal Support Fairalne Firewall and many other listings. Ford Escape brake pedal soft no matter what Hoping someone has some ideas otherwise this car is going to have to go at the insistence of my wife who drives it. When the car is not running, the pedal is nice and hard just like you would expect after bleeding. If you have a 'long' brake pedal rather than a slightly spongy feel, this will do nothing to help you. The problem is that the car is mostly repaired, and when I drive it the brake pedal is very soft. Fluid added, Two anomalies a) mechanic said that the caliper I bought from the auto store was for a left side, but should work anyway. Have good brake pedal without engine running very little movement. A) With the engine not running, press and depress the brake pedal several times to remove any vacuum from inside the booster. Is there anything that I can do to fix a touchy gas pedal? Log in or Sign up rear seat fold down mod, Tyger soft tonneau cover, Linex with uv protection, TRD. Fluid added, Two anomalies a) mechanic said that the caliper I bought from the auto store was for a left side, but should work anyway. I came from a WRX with Stoptech brakes and my wife's Legacy brake pedal is like a rock. Since it's 2007, I doubt you need new bleeder screws. When it was new, I remember being really impressed with the brakes. My problem is that I still have a soft brake pedal even after I bled the system 5 times. It almost feels like you're stepping on a sponge. I thanked them kindly, bought new ones online, put them in. The brakes were working really well until there was a large amount of snow and my dad said he tried moving my car and he had a hard time in the driveway. Doing this two or three times (depending on if I have enough room to reapply) will get the pedal higher and firmer every time. Pick up this complete Set of Drake Muscle Cars Billet Pedal Covers with Shelby Logos for your 2005-2020 Mustang with an Automatic Transmission from CJ Pony Parts! These direct-fit upgraded pedal covers are constructed from premium-quality billet aluminum. honestly get a hanes or chiltons manual and figure out how to do it all yourself, it really isn't that hard. Air trapped in the lines, calipers or wheel cylinders will make the pedal feel soft and spongy. If air gets into the brake lines, it can prevent brake fluid from flowing properly, causing the brake pedal to feel spongy or soft. Power booster seems to work: w/ engine off, I pump the brake a few times and hold. 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. I know there several threads relating to soft or spongy brake pedals; however, my situation is different. remember you need to what they call seat your brakes to keep them from being inconsistent, you drive down the road about5 miles and stop and go often not braking hard enough to get the pads or roter's to hot , this will seat the pads and you will have a. I would put the car on flat grond and release the parking brake and then bleed the brakes. Sometimes they even say the pedal just goes straight to the. Recently, I noticed that when my car is cold, eg in the morning, the brake pedal is very hard to step. Frt Drdiff brembos Rear Drdiff cobras Braided flex lines. If you press the brake pedal until it is firm (engine running, while stationary) and there is still a little bit of 'bounce' in the pedal at that point, then braided lines can help. I upgraded to StopTech SS lines, Carbotech xp 20/10 pads, new centric blank rotors, and motul rbf 600 fluid. "new" car to my wife. And worse, I had the same soft pedal after having a shop do a flush. At around 8:35 in the video, This Old Tony breaks out a pair of syringes, colored. B) On the last push of the brake pedal, hold moderate pressure on the brake pedal. When you hit a big bump or when you brake on ice the brakes shutter & the brake pedal goes to the floor unable to stop. I bled the brakes and I get plenty of pedal pressure, but when I start the car the brake pedal goes to the floor. Car has been sitting for at least a year and has only 50k mi. Brake pedal soft on first pushthen firms up on second push? Hold the pedal down while you go under the car and bleed the wheels. The more I think about it though, I really don't believe this would be the issue being that the brakes are rock hard with the car off and soft with it on. Driving with a 'soft' brake. If air gets into the brake lines, it can prevent brake fluid from flowing properly, causing the brake pedal to feel spongy or soft. This is especially true if your brakes go soft all at once, without any advance warning. The FSM will have detailed instruction. Long brake pedal travel after pad change - RogerL : The front brake pads on my Astra have just been replaced and although the car stops as normal, the pedal travel seems longer / softer than before. Soft brake pedal after replacing the brakes and rotors. After lots of frustration, I caved in and tried the old geezer, crusty ole fart, recommended Model T method, gravity bleeding and it solved all my soft pedal problems. When it was new, I remember being really impressed with the brakes. Ford Escape brake pedal soft no matter what Hoping someone has some ideas otherwise this car is going to have to go at the insistence of my wife who drives it. Your foot goes down further than normal when you apply the brakes. After inspecting the old brake booster I noticed the rod was a bit loose and where the check valve goes in it was not sealing properly. The system does this to keep them from. If you press the brake pedal until it is firm (engine running, while stationary) and there is still a little bit of 'bounce' in the pedal at that point, then braided lines can help. Brake fluid is a hydraulic fluid responsible for moving the different components of the vehicle's braking system. My daughters car so i just learned - Answered by a verified Toyota Mechanic. Next check vacuum source. While driving to work a couple mornings ago, she was approaching a stop light and applied the brakes, and the pedal went down to within a couple inches from the floor board. Pedal definitely feels firmer in my focus rental so I'll use that as a gauge when I get back in my car in a few hours. brake fluid, new part ordered should be back with me. It is a Mazda protege 1998 and I had changed the brakes within the passed 2 years but I do a small amount of mileage. I have put in a new brake booster, and a new master cylinder, same result. Always start at the right rear. That's why a soft, spongy-feeling brake pedal that doesn't resist pressure and goes straight to the floor is a common sign that something's gone wrong in your brake system. Another possible cause is a bad brake master cylinder. This is especially true if your brakes go soft all at once, without any advance warning. I like the Valvoline synthetic brake fluid. Car has intermittently soft or spongy feeling to the brake pedal during what seems like no specific reason. If the pedal does not gradually sink towards the floor as you continue with constant pressure on the pedal then the MC is more than likely OK. Anyway, the brake pedal is firmer after the system was bled. Another thing to look into is the switch at the top of your brake pedal. After lots of frustration, I caved in and tried the old geezer, crusty ole fart, recommended Model T method, gravity bleeding and it solved all my soft pedal problems. If it doesn't i think it has gone bad. Nice cheap upgrade. Good for Lift kits because of extra length at 4". At about 1/2 way to the floor it firms up. Use a boxed end wrench too so you don't flatten the nuts. Drum Brake Wheel Cylinders Too LargeIf the original drums have been upgraded to a larger drum system, then the fluid. Another thing to look into is the switch at the top of your brake pedal. My flatmate purchased the car about 6 months ago. The vacuum created from the engine makes pressing the brake pedal easier and assists you so that you don't have to press the brakes as hard to stop the car. Replaced pads cleaned everything and used pedal to return the pistons. If the problem persists proceed to Step 2. I noticed in my other car and a buddy's car that when I pumped the brakes up with engine off the pedal gets hard and no matter how much pressure u push on pedal it doesn’t move. Comprehensive catalog of Pedal Support Fairalne Firewall and many other listings. If pedal is OK now, vacuum source is insufficient. One of the more common causes for the brake pedal going to the floor is a loss of brake fluid. I had a brake test done on the car and it passed that no. Hi, My car stood still for a couple of weeks beacause i can't drive it at the moment (surgury on my leg) but my brother drove it today. After starting the car and pumping the brake pedal a few times, the brake pedal feel was still spongy, similar to when there is air in the brake lines. Little to nothing better. Brake pads use both mechanisms, but at higher temperature, adherent friction is what stops the car. I have a nice firm brake pedal when the car is not running, as soon as I start the engine, the pedal goes almost to floor. Correct, there was a TSB for soft brakes - but not this issue I am posting about. However, trying to heel to toe shift is complicated by the brake pedal feel. Tap the brake pedal before you do this to seat the pads against the rotors and note the pedal position, no matter how hard you weave the car the pads shouldn't get pushed back and the pedal position should remain the same. Check for a seized caliper/wheel cylinder, pinched or restricted brake line. If the reservoir cover is off when I hit the brake pedal, my engine compartment gets a bath! Thanks, Rick. With the car on, I can bury the pedal to the floor with little resistance. If the pedal ratio is incorrect by as little as 1/4”, this can allow too little pushrod to move through to the booster. We had just bought the car and the other half was driving it. remember you need to what they call seat your brakes to keep them from being inconsistent, you drive down the road about5 miles and stop and go often not braking hard enough to get the pads or roter's to hot , this will seat the pads and you will have a. Pressure brake bleeding is the best way to make sure you get all the air out. Something that de-emphasizes, restrains, or plays down, as in The mayor put a soft pedal on this potentially explosive situation. Over 600K Auto Restoration & Performance Parts. I started to notice that my brake pedal was getting soft and spongy and the pedal would bleed off almost to the floor if you held it down. Bleeding the brakes after brake components have been replaced is a step you don't want to skip if you want a firm brake pedal. You should flush the fluid every two or three years, but it can be a moderately difficult DIY repair. 2013 Toyota Rav4 AWD;. How do you tell if a soft brake pedal is due to air in the line or a frozen/bad caliper? The top of my brake pedal is soft and has no braking force for the first inch or two of pedal movement. B) On the last push of the brake pedal, hold moderate pressure on the brake pedal. Filed Under: MAINTENANCE Cars for Sale. Make sure your rear shoes are adjusted correctly. Normally a soft or spongy feel to the clutch when the pedal is depressed is the result of air in the system. Furthermore with the brake booster line plugged and the car on, they are also rock hard. The "BRAKE" light is continuously on. On taking to MOT it goes soft. I'm having an issue with my brakes after the car sat in out in the freezing cold for a week. The garage that did the work is stumped. Car Shakes When Braking? 4 Common Causes And Fixes. Have you tried? It's a bit harder than without the vacuum assist, but pedal is easily depressed by hand when a bleed valve is open, even after vacuum is depleted. There are a variety of things that can cause a brake pedal to feel spongy, such as a defective master cylinder, a twisted hard line or incorrectly adjusted rear calipers. Frequently this is caused by the brake fluid reservoir dropping below the level of the hose which goes from the brake reservoir to the clutch master cylinder. Young fans of vintage military machines will love charging into action in this flat-fender pedal car. The car still brakes fine, but I don't like how it feels. A brake pedal that is soft and can be applied all the way to the floor usually means the brake fluid is ineffective and needs replacing but there can be several other. TIP: An easy test is to park a vehicle with a good brake pedal next to your car and run the vacuum to booster in question. Everything is ok. It is a potentially serious problem that can make it unsafe to drive your vehicle. Brake pedal is spongy. If the pedal sinks or requires pumping to keep your car from creeping ahead, the master cylinder needs to be replaced. Causes of Low Brake Pedal Causes of Low Brake Pedal in classic car restoration soft or spongy pedal. I let my uncle look at the car as he is a mechanic who has had training working on Mercedes. Showcasing our large collection of block brake for sale right now. This spring I replaced the MC, front calipers, pads, rear drums, cylinders, and shoes. If I hold the pedal it is firm and does not creep toward the floor. The vacuum created from the engine makes pressing the brake pedal easier and assists you so that you don't have to press the brakes as hard to stop the car. Pressure brake bleeding is the best way to make sure you get all the air out. Power booster seems to work: w/ engine off, I pump the brake a few times and hold. The brake pedal travels all the way to the floor and is SUPER soft. I understand it will be soft and not stop as quickly as a car but I don't understand why it is firm after a quick pump. Porsche 356c 356sc C Sc Clutch Brake Pedal Cluster T6. Sounds like the bmc might be bad with the soft pedal feel. The "soft pedal" phenomena, however, could be caliper-related. For the past 2 days, I realized that my brake pedal depresses quite easily down all the way to get enough braking action. got home, let it sit for approx 1 hour, pedal soft. Loading Close. Tested brake booster like FSM tells. A brake pedal can be hard to push because of several factors, including a brake pedal getting caught on something, failure of the power brake booster or a sticking shoe, which causes the brake fluid to boil. My brake pedal is soft and I hear a hissing noise when i push it hard, a few weeks. i am also feeling the soft pedal feel like you describe. It feels like a clutch, it sinks ALL the way down with very light restriction. This is pretty easy to diagnose: You should be able to see brake fluid underneath the car if there's a leak in the system. during my new york state inspection did not pass due to a soft brake pedal, i had the back brakes replaced and they discovered the master cylinder had a leak. The only way to determine the cause is by taking a look at the braking system or taking the vehicle to a qualified mechanic. Upon starting it, the pedal is soft and after a couple of pumps it becomes firm. It is a Mazda protege 1998 and I had changed the brakes within the passed 2 years but I do a small amount of mileage. I have a nice firm brake pedal when the car is not running, as soon as I start the engine, the pedal goes almost to floor. approaching a stop sign), the pedal will very slowly start sinking all the way to the floor; however, a simple lift of the foot and re-application will stop the car as it typically. 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. When the engine is off, the pedal is hard after a few pushes. I started to notice that my brake pedal was getting soft and spongy and the pedal would bleed off almost to the floor if you held it down. Hence, bad rotor condition might causes brake pedal vibrates when stopping. When driving, it also takes a lot more motion to engage the brakes than it did. Power booster simply reduces the pressure the driver needs to apply to the pedal to get braking action (mechanical advantage). Technical Specifications. Just put in a new brake booster, master cylinder and one new caliper. If the brake pedal is soft when pressed down, the brake lines have air in them and need bleeding to remove the air. If the brake pedal does go to the floor with a very soft application- then the master cylinder is leaking internally - I think this is rare now. Brake fluid is a hydraulic fluid responsible for moving the different components of the vehicle's braking system. Remember, if your car is equipped with ABS (most are these days), the pedal will seem to vibrate when you brake very, very hard. Te brakes were originally soft but i was under the impression that they were soft because the pads were worn out. COM — When it comes to brakes, there are no good vibrations. Brake Pedal feels soft or goes all the way to the floor - This indicates you probably have air in your brake lines. I added a bit of brake fluid to the reservoir after each side was done. After replacing master cylinder and still having the problem I decided that it could only be the brake booster so I replaced it, bled the brake lines one more time and it finally fix the soft pedal. Off to the dealer today they. The dealer's shop has looked at this and said it is normal. Bleeding the brakes doesn't cause any change and pumping the brakes only results in moderate return of the brake system. Update 2: oh, and the brake pedal comes back up after i depress it. i press on the brake pedal and it seems very soft. I had to park my car last November because the brake pedal was going to the floor and wasn’t safe. Everything is ok. 8L genesis sedan with 73,000 mi. From your question, I know that the car has power brakes. just got my rotors shaved and brake pads shaved now the brake is soft then goes back to normal then soft brake pedal - LotusTalk - The Lotus Cars Community Google search. Initially the brakes bite lightly, and then the pedal keeps going down, and you have to keep applying the brakes more and more to get the car to stop normall. The brake pads and rotors are still good. If it's still soft, then you still have a leak somewhere in the system. The B9 does have a somewhat soft pedal. Correct, there was a TSB for soft brakes - but not this issue I am posting about. Hi I changed the fluid on my car a while back and I'm sure the brakes are softer since, I have had someone else try them and they don't think they are that soft, however to me they don't have the initial bite and the pedal just doesn't feel right. Could it be a stuck caliper like Fish suggested?. Accessories; Car Care; Literature and Manuals; Decals; Paints and Dyes. Soft pedal. If you can’t remember when you last had a brake service, then you might have low brake fluid simply because it’s being used by your braking system. We had just bought the car and the other half was driving it. 015" 1) Remove both brake lines from master cylinder. After lots of frustration, I caved in and tried the old geezer, crusty ole fart, recommended Model T method, gravity bleeding and it solved all my soft pedal problems. Bleed the brake fluid from your car and replace it with fresh fluid. Also, if the car is off and I pump the brakes after a few pumps of the pedal it gets harder, but soon as I start the car back to spongy to the floor braking. Before going any further, generally speaking, a warped brake rotor means any brake rotor that isn’t perfectly flat and parallel with the plane rotation. When the engine is off, the pedal is VERY stiff. In the pedal-gate dept. Do you feel like your brake pedal feels a little bit soft or spongy? Some of the common causes to a soft or spongey pedal include: Brake fluid leaks, Worn out brake hoses, Air in the system. If I pump the brake it firms up and I have no more issues with the brake feeling soft until the next time I start the car. You can easily inspect for a leak by looking under the vehicle. This is pretty easy to diagnose: You should be able to see brake fluid underneath the car if there's a leak in the system. Did a 60-0 test and it took 3. Problem is: when I press the brakes in normal operation, the pedal is very slow to come back up (maybe 5 seconds), and the brakes drag until it comes back up. What Goes Wrong? The brake system in your car is a sealed hydraulic system and relies on close tolerances between the brake pads and rotors or the brake shoes and drums. Continue to bleed it until air bubbles stop coming out. One of the more common causes for the brake pedal going to the floor is a loss of brake fluid. I know there several threads relating to soft or spongy brake pedals; however, my situation is different. Soft pedal. When the engine is off, the pedal is hard after a few pushes. She said it always had a soft feeling brake pedal and she figured that was just how those cars are. Too long a travel before engaging the master cylinder gives a soft pedal feel. The car brakes well enough but the pedal goes way too far in. the second time i had to stop quickly and brake grinded to a stop in heavy traffic and a city street. Spongy, soft brake pedal. If you are running the engine, you should not see that to happen. The problem is that the car is mostly repaired, and when I drive it the brake pedal is very soft. Noticeable when holding constant pressure against the brake pedal at a stop. The booster requires 18" of vacuum to operate at full efficiency. Drum Brake Wheel Cylinders Too LargeIf the original drums have been upgraded to a larger drum system, then the fluid. That's why a soft, spongy-feeling brake pedal that doesn't resist pressure and goes straight to the floor is a common sign that something's gone wrong in your brake system. Before beginning the following procedure check to make sure brake pedal free play is approximately ½” and air gap from booster pushrod to master cylinder piston is approximately. It is a Mazda protege 1998 and I had changed the brakes within the passed 2 years but I do a small amount of mileage. Car stops ok. Searched here and over google. Car has intermittently soft or spongy feeling to the brake pedal during what seems like no specific reason. The brake pipes also pass through a balance unit which limits pressure to the rear brakes to prevent the back wheels locking when the weight of the car is thrown forwards during braking.