Finally the video I've been searching for! The rest all use the fancy yet cheap bleeding tool I don't have time for lol Thank you for an excellent video all these years later
Thank you for the clear and perceive video! Turns out my master cylinder went the other day and this saved me so much time after I kept trying to bleed the brakes with no luck!
When you remove the block off plugs after completing the job, is there no passage for air to re-enter the pressure chambers? Sorry for the beginners question.
A couple of important things to help with this question Block off plugs should not be removed until the master cylinder is installed on the vehicle and the brake lines are ready to be connected to the master cylinder Always maintain adequate brake fluid level in the master cylinder, do not allow the fluid level in the master cylinder to drop below 1/2, refill as required during bench bleeding and installation, this helps prevent air from entering the master cylinder On some vehicles bleeding the brake system at the wheels after bench bleeding and installing the master cylinder may be required to remove any trapped air from the rest of the vehicles brake system. I hope that helps!
A poor method of bench bleeding the master cylinder. The best method is with a $9 bleeder kit that directs the fluid from the ports back to the reservoir through tubes. Leave the plastic screw in nipples and the tubes running to the reservoir in place until you attach the MC to the vacuum drum. Quickly remove the nipples and screw in the brake line fittings all the way. Then, while someone slowly pumps the brake pedal, crack open one port until brake fluid leaks out. DO NOT let up on the pedal until the assistant tightens the fitting. Do this two or three times and then tighten it for good and do the other port the same way. In this manner you won't have to bleed the brakes at the wheel. This method displaces all the air between the ports and the tubes.
I'm sure everybody has their 2cents to contribute. But you are wrong. I am currently having trouble bench bleeding my clutch master with this bleeding kit you are talking about. Just a simple hose running back to the reservoir got bubbles out but piston won't get stiff no matter how many times you keep pumping. First thing I did when removing this master cylinder was to block it off with my finger and pump it, this is the only time I actually got the piston to get stiffer but obviously simply blocking it with finger pressure isn't enough. I need to get some block off fittings. Great video. About the 2nd one I came across today with the block off technique instead of the redirecting to the reservoir.
@@sergioup5902 The piston doesn't get stiff this method because its free-flowing fluid, the goal is to get the air out, not necessarily to make it hard to pump.
Hello my car is 1993 Ford Taurus V6 3L and my master cylinder have 4 ports (4 brake lines) do I do the same things you did with ,,but in my case i need to put 4 plugs instate of 2 like you? thank you
If the engine work space permits what is the advantage of bench bleeding over bleeding in-the-car and attached to the brake pedal just before the old brake lines are reinstalled?
Thanks for the video. I have subscribed to your channel. Please do I have to bleed ABS device after changing master cylinder? The machinc bled the master cylinder after installed at the car and bled the four wheels but still sometimes break padal goes soft when pressing! I don't know if he bench bled! Note: no ABS light blinking/on.
After bench bleeding the Master Cylinder and installing it on the vehicle we also recommend bleeding the rest of the vehicles brake system at the wheels following the vehicle manufactures suggested procedures. On some vehicles this may also require the use of a Scan Tool to activate special bleeding procedures for the Anti lock Brake System. Should you have any further questions or concerns, please call our Toll Free Tech line at 1-800-228-9672 and our ASE certified technicians will assist you.
@@MotorcarParts Thank for the advice, I am not in US and I would have called you without hesitation since I am looking for reliable service. The mechanic repeated the bleeding process following manufacturer steps and used auto tool but manufacturer did not mentioned bench bleeding and he did that after I asked him to do so. The auto tool showed no issues except that some dirt that causes acceleration pedal to get stiff sometimes. He removed the dirt and acceleration pedal is fine now. Unfortunately the mechanic seems to have no idea what bench bleeding is? I noticed that most of times brake gets soft when turning extremely left U turn, maybe caliper issue, but no friction sound and the vehicle doesn't lose balance when braking. I tested with speed of 80 KM/Hour. I also doubt that they might be some oil in the booster that causes the brake softness but the brake pedal never gets hard so it is something else. paid a lot of money and yet still the same. I am going to move to different mechanic and asked him to follow the steps you recommended and bench bleed is must otherwise i am not paying him. My vehicle is KIA Sorento 2016, 2.4L, 4WD. I am getting disappointed with KIA it is hard to diagnose.
Very interesting, I've never seen it done this method but this looks much simpler (and cooler) than having to keep pushing with two hoses returning to the reservoir. Is there a definite way to know if this has gotten out all the air completely? I know the other method you can see the bubbles get less and less but this is more based on your judgement?
It does seem mechanically sound, and they wouldn't tell us anything that would make their product look bad. So here goes...just got mine and I like the quicker process.
Always best to bench bleed off the vehicle. Bench bleeding on the vehicle can often lead to trapped air remaining in the master cylinder that cannot be removed. Bench bleeding the master cylinder off the vehicle will ensure all air is removed from the master before installing it on the vehicle. If the air is not completely removed from the master cylinder prior to installation this will result in a low, soft brake pedal.
Me either. I'm going to try it this way first and then use the tubes if it doesn't work properly. Did you end up using the gravity method or the clear tube method?
How come your remanufacturing facility was located in Torrance, CA. then moved all alternators and starters to a new factory in Mexico in 2008? Shouldn't it called "Motorcar Parts of Mexico?" Inside the building they were test armature specs from commutator plates and pretending to write it down, over & over. I went around the corner and climbed 3 pallets high to find empty boxes. All dog & pony show. They were doing one kind of starter at there rebuild station. To check the starter solenoid, all they did was hit is B+ to see it retract. Since the solenoid is a moving part, but also a large current switch, I asked them "Why don't the place a 100 amp load across the Battery to Motor connection?" They said they were working on that! So if worn out, you will find out after you bolt it on. Perhaps 3 days later at the mall when it won't do anymore than "Click". Keep a tow truck on speed dial and never throw away your receipt. Use zip lock bag, place all repair orders in bag with newest one on top, zip and keep handy. Thanks Motorcar Parts of Mexico! DK, Omaha. ASE master tech since 1978. Or ask the silver haired fox who plays with his huge diamond ring. He is the head lier! He is probably in government by now!
Yep, I was just reading a while back how the company that made the original "Vice Grips" (out of Nebraska) was sold to Irwin Tools (think Home Depot and Lowes) who promptly closed the Nebraska factory, laid off all workers, and moved the manufacturing of the imposter Vice Grips to China. An HVAC company from Minnesota (Malco) bought the old building in DeWitt, Nebraska, hired all the former workers they could find, and began making incredible quality locking pliers under the name "Eagle Grip" in 2017. Sadly (because of foreign competition), Malco began losing money and was forced to stop production at the Nebraska plant December 31. They still have some on sale on Amazon, and elsewhere, but when their supply is gone, it's gone forever. I bought 4 and would highly recommend them if you are any kind of DIY'er. Sorry for the long speech, but my short answer is: YES! I agree with you! I will always pay more for American made if it is available instead of cheap overseas tools.
@@crocodile1313 It is sad on many levels if you look at the big picture. The US Federal Reserve can only print money while the US treasury barrows money from countries like China. They (China) went into a huge buying spree in the US with money we gave them to cover our loans. Now, a step further with a Chinese 100 year plan, has purchased companies and Trade Mark names. I am simply saying that by individuals, portions of % of investments and names of companies or back-door ownership or influence due to board positions but, Who owns "Bell & Howell, IBM-Lenovo computers, AMC, Spotify, Tencent Music (Like iTunes) GE, Haier Group, Segway (2 wheel scooters), Brookstone (Special 60's era tooling) Shanghai (GM) automotive industry group, Snap-Chat, Tik-Tok, Hilton/Carlson Hotels inc, WeWork (Chinese), Sotherby's, life insurance Taikang life, Drahi life, StarPlex Cinemas w/holdings in AMC theaters, Alliance Healthcare services and the strange is "Tencent" has holdings in Tesla (21.7%) and a gaming company "Riot Games" who owns "League of Legends", Smithfield a large Pork supplier w/500 US farms, then Uber-Volvo-Areospace companies shares. Buy Gold, get 30 year meal kits and dig a shelter below 5feet ground where temps are stable. Grocery stores have stock issues now, but California will not register 70,000 semi-tractors because they are older and don't have "DPFE" on the exhaust. This system catches particulates (Not a Catalytic Converter) just a cleaner but as it pressure increases on the engine side, the exhaust system has a low pressure, then it senses this, goes into clean mode. Clean mode requires as much as 5 gallons of diesel dumped thru the injectors burning the screen clean. It is wasteful and expensive. The electric semi-tractors are pulling trailers from Long Beach, LA, San-Fran to just over the state line to continue the trip. It is stupid as I live in Omaha, yet trains (Warren Buffet) run to Chicago to unload. Then semi-tractors bring goods back to Omaha they passed the day before. It's the old highway 30 group. Other than that, I don't know anything. Retired, money is tight, but I place money in a second savings account and call it "E" for emergency. You can have as many savings accounts as you want as banks don't have rules to limit. But, car, house, appliances whatever. $100 per month is like a bill. Place it in savings #2 or "E". That is $1,200 per year, $6,000 in 5 years. It's yours. Just thinking out loud! DK, Omaha. ASE Master Tech since 78, retired.
It will be impossible to introduce new air so long as all of the nipples are threaded/sealed properly. It may be possible for air that is already in the cylinder to split in to smaller bubbles making it seam as if there is more air but there is no place for new air to enter. Although the new piston could have a faulty seal. Highly unlikely but possible especially with remanufactured MCs.
@@mahatmagandification If the MC is damaged then sure. That's in line with what I said about being sealed properly though. A new MC should not have any way for the air to enter.
@@rivit7615 Except that isn't what you said, you were talking about nipples in your original comment... "It will be impossible to introduce new air so long as all of the nipples are threaded/sealed properly. It may be possible for air that is already in the cylinder to break in to smaller bubbles making it seam as if there is more air but there is no place for new air to enter." If you're going to edit, you may as well correct "seam" too.
@@mahatmagandification Are we not talking about a new MC install? The nipples would be the only issue because those are the things that were not installed from the factory. You re just being a jackass. All good.
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Best info I seen yet on this subject. Tapping on it helps a lot if you have small bubbles stuck in the boar.
Finally the video I've been searching for! The rest all use the fancy yet cheap bleeding tool I don't have time for lol Thank you for an excellent video all these years later
This is one of the best videos ever!!!
Thank you for the clear and perceive video! Turns out my master cylinder went the other day and this saved me so much time after I kept trying to bleed the brakes with no luck!
Best video yet, thank you!!!
How do you bleed whilst it's on the car? I have a 2003 audiba4 convertible 1.8t. Thanks
When you remove the block off plugs after completing the job, is there no passage for air to re-enter the pressure chambers? Sorry for the beginners question.
A couple of important things to help with this question
Block off plugs should not be removed until the master cylinder is installed on the vehicle and the brake lines are ready to be connected to the master cylinder
Always maintain adequate brake fluid level in the master cylinder, do not allow the fluid level in the master cylinder to drop below 1/2, refill as required during bench bleeding and installation, this helps prevent air from entering the master cylinder
On some vehicles bleeding the brake system at the wheels after bench bleeding and installing the master cylinder may be required to remove any trapped air from the rest of the vehicles brake system.
I hope that helps!
Thanks for the detailed answer.@@MotorcarParts
Can you post a link to a set of plastic block off plugs?
Ideally for several common sizes...
Thank you!
Should come with new master.
A poor method of bench bleeding the master cylinder. The best method is with a $9 bleeder kit that directs the fluid from the ports back to the reservoir through tubes. Leave the plastic screw in nipples and the tubes running to the reservoir in place until you attach the MC to the vacuum drum. Quickly remove the nipples and screw in the brake line fittings all the way. Then, while someone slowly pumps the brake pedal, crack open one port until brake fluid leaks out. DO NOT let up on the pedal until the assistant tightens the fitting. Do this two or three times and then tighten it for good and do the other port the same way. In this manner you won't have to bleed the brakes at the wheel. This method displaces all the air between the ports and the tubes.
I'm sure everybody has their 2cents to contribute. But you are wrong. I am currently having trouble bench bleeding my clutch master with this bleeding kit you are talking about. Just a simple hose running back to the reservoir got bubbles out but piston won't get stiff no matter how many times you keep pumping. First thing I did when removing this master cylinder was to block it off with my finger and pump it, this is the only time I actually got the piston to get stiffer but obviously simply blocking it with finger pressure isn't enough. I need to get some block off fittings. Great video. About the 2nd one I came across today with the block off technique instead of the redirecting to the reservoir.
@@sergioup5902 The piston doesn't get stiff this method because its free-flowing fluid, the goal is to get the air out, not necessarily to make it hard to pump.
I agree
I am with you. But the assistant may not be necessary.
Can you do this in the car since i dont have a bench vice
thank you Im glad I found your information the other information sites state all kinds of pump and tube baloney are needed
Hello
my car is 1993 Ford Taurus V6 3L and my master cylinder
have 4 ports (4 brake lines)
do I do the same things you did with ,,but in my case i need to put 4 plugs instate of 2 like you?
thank you
If the engine work space permits what is the advantage of bench bleeding over bleeding in-the-car and attached to the brake pedal just
before the old brake lines are reinstalled?
This piston don't go in as far when on the car
I reckon you have a difficult time watching if more bubbles come up if you sit in the car
Thanks for the video. I have subscribed to your channel.
Please do I have to bleed ABS device after changing master cylinder? The machinc bled the master cylinder after installed at the car and bled the four wheels but still sometimes break padal goes soft when pressing! I don't know if he bench bled!
Note: no ABS light blinking/on.
After bench bleeding the Master Cylinder and installing it on the vehicle we also recommend bleeding the rest of the vehicles brake system at the wheels following the vehicle manufactures suggested procedures. On some vehicles this may also require the use of a Scan Tool to activate special bleeding procedures for the Anti lock Brake System. Should you have any further questions or concerns, please call our Toll Free Tech line at 1-800-228-9672 and our ASE certified technicians will assist you.
@@MotorcarParts Thank for the advice, I am not in US and I would have called you without hesitation since I am looking for reliable service. The mechanic repeated the bleeding process following manufacturer steps and used auto tool but manufacturer did not mentioned bench bleeding and he did that after I asked him to do so. The auto tool showed no issues except that some dirt that causes acceleration pedal to get stiff sometimes. He removed the dirt and acceleration pedal is fine now. Unfortunately the mechanic seems to have no idea what bench bleeding is? I noticed that most of times brake gets soft when turning extremely left U turn, maybe caliper issue, but no friction sound and the vehicle doesn't lose balance when braking. I tested with speed of 80 KM/Hour. I also doubt that they might be some oil in the booster that causes the brake softness but the brake pedal never gets hard so it is something else. paid a lot of money and yet still the same. I am going to move to different mechanic and asked him to follow the steps you recommended and bench bleed is must otherwise i am not paying him. My vehicle is KIA Sorento 2016, 2.4L, 4WD. I am getting disappointed with KIA it is hard to diagnose.
@@eng.yousif1 buy a Chevy!
@@illmatter850 I will consider it. Thanks, I checked. Chevy is strong and reliable vehicle. Time to change!
@@eng.yousif1 gm is crap
Thanks 👍 very much video helpful
From Nick Ayivor from London England UK 🇬🇧
I bought a master cylinder for a 2006 honda accord V6 and only came with 2 plugs to bleed.Where can i get a bleeding kit like this video.Thanks
Brake bleeding kits are fairly inexpensive and are available at most auto part stores or online vendors.
Straight to the point. I like it.
Very interesting, I've never seen it done this method but this looks much simpler (and cooler) than having to keep pushing with two hoses returning to the reservoir. Is there a definite way to know if this has gotten out all the air completely? I know the other method you can see the bubbles get less and less but this is more based on your judgement?
It does seem mechanically sound, and they wouldn't tell us anything that would make their product look bad. So here goes...just got mine and I like the quicker process.
How to keep air from getting back into the master cylinder after bench bleeding? Do tell,im all ears
Once you extract all air out the simple laws of fluid dymanics and gravity will not allow it to happen as long as your reservoirs are full.
@@ZZZZ-zg3zb Very good.
Thanks for the video, it helps very much!!!😅
Imagine that a simple video. Others were saying I needed tubes and syringes and everything else
So you believe this actually was the right way? Tell me when did you see the air come out?
@@jamescole3152 I saw the air when I did it worked for me
How about a video on how to properly measure booster rod clearance the master cylinder?
Thank you for the suggestion, we will look into it.
Great video
very helpful vid, thanks!
thank you Sir.
Can you do this on the car?
Always best to bench bleed off the vehicle.
Bench bleeding on the vehicle can often lead to trapped air remaining in the master cylinder that cannot be removed. Bench bleeding the master cylinder off the vehicle will ensure all air is removed from the master before installing it on the vehicle. If the air is not completely removed from the master cylinder prior to installation this will result in a low, soft brake pedal.
I like this guy
Bitte ich brauche Bremsenreparatursatz von wo?
I've never seen it done without putting the hoses in the reservoir
Me either. I'm going to try it this way first and then use the tubes if it doesn't work properly. Did you end up using the gravity method or the clear tube method?
How come your remanufacturing facility was located in Torrance, CA. then moved all alternators and starters to a new factory in Mexico in 2008? Shouldn't it called "Motorcar Parts of Mexico?" Inside the building they were test armature specs from commutator plates and pretending to write it down, over & over. I went around the corner and climbed 3 pallets high to find empty boxes. All dog & pony show.
They were doing one kind of starter at there rebuild station. To check the starter solenoid, all they did was hit is B+ to see it retract. Since the solenoid is a moving part, but also a large current switch, I asked them "Why don't the place a 100 amp load across the Battery to Motor connection?" They said they were working on that!
So if worn out, you will find out after you bolt it on. Perhaps 3 days later at the mall when it won't do anymore than "Click". Keep a tow truck on speed dial and never throw away your receipt. Use zip lock bag, place all repair orders in bag with newest one on top, zip and keep handy.
Thanks Motorcar Parts of Mexico!
DK, Omaha. ASE master tech since 1978.
Or ask the silver haired fox who plays with his huge diamond ring. He is the head lier! He is probably in government by now!
Yep, I was just reading a while back how the company that made the original "Vice Grips" (out of Nebraska) was sold to Irwin Tools (think Home Depot and Lowes) who promptly closed the Nebraska factory, laid off all workers, and moved the manufacturing of the imposter Vice Grips to China. An HVAC company from Minnesota (Malco) bought the old building in DeWitt, Nebraska, hired all the former workers they could find, and began making incredible quality locking pliers under the name "Eagle Grip" in 2017. Sadly (because of foreign competition), Malco began losing money and was forced to stop production at the Nebraska plant December 31. They still have some on sale on Amazon, and elsewhere, but when their supply is gone, it's gone forever. I bought 4 and would highly recommend them if you are any kind of DIY'er.
Sorry for the long speech, but my short answer is: YES! I agree with you! I will always pay more for American made if it is available instead of cheap overseas tools.
@@crocodile1313 It is sad on many levels if you look at the big picture. The US Federal Reserve can only print money while the US treasury barrows money from countries like China. They (China) went into a huge buying spree in the US with money we gave them to cover our loans.
Now, a step further with a Chinese 100 year plan, has purchased companies and Trade Mark names. I am simply saying that by individuals, portions of % of investments and names of companies or back-door ownership or influence due to board positions but, Who owns "Bell & Howell, IBM-Lenovo computers, AMC, Spotify, Tencent Music (Like iTunes) GE, Haier Group, Segway (2 wheel scooters), Brookstone (Special 60's era tooling) Shanghai (GM) automotive industry group, Snap-Chat, Tik-Tok, Hilton/Carlson Hotels inc, WeWork (Chinese), Sotherby's, life insurance Taikang life, Drahi life, StarPlex Cinemas w/holdings in AMC theaters, Alliance Healthcare services and the strange is "Tencent" has holdings in Tesla (21.7%) and a gaming company "Riot Games" who owns "League of Legends", Smithfield a large Pork supplier w/500 US farms, then Uber-Volvo-Areospace companies shares.
Buy Gold, get 30 year meal kits and dig a shelter below 5feet ground where temps are stable.
Grocery stores have stock issues now, but California will not register 70,000 semi-tractors because they are older and don't have "DPFE" on the exhaust. This system catches particulates (Not a Catalytic Converter) just a cleaner but as it pressure increases on the engine side, the exhaust system has a low pressure, then it senses this, goes into clean mode. Clean mode requires as much as 5 gallons of diesel dumped thru the injectors burning the screen clean. It is wasteful and expensive. The electric semi-tractors are pulling trailers from Long Beach, LA, San-Fran to just over the state line to continue the trip. It is stupid as I live in Omaha, yet trains (Warren Buffet) run to Chicago to unload. Then semi-tractors bring goods back to Omaha they passed the day before. It's the old highway 30 group. Other than that, I don't know anything.
Retired, money is tight, but I place money in a second savings account and call it "E" for emergency. You can have as many savings accounts as you want as banks don't have rules to limit.
But, car, house, appliances whatever. $100 per month is like a bill. Place it in savings #2 or "E". That is $1,200 per year, $6,000 in 5 years. It's yours. Just thinking out loud! DK, Omaha. ASE Master Tech since 78, retired.
Good job teaching how to doit our self know I m ready thank you … I’m
Professional presentation
Thanks
If I’m not getting any air out of 4 calipers, is that means there is no air In the master or master can still have it?
Calipers, what calipers, u mean by brake bleeding valve on each tire, if that then it means you have no air in your brake lines, you are good to go.
@@ZZZZ-zg3zb And just where do you thing the brake bleeding valve on each tire,is located?
@@ZZZZ-zg3zb he may not be getting fluid to push the air out. He's asking if this is because there is still air in the MC
Tks 4 you video
Thanks
I dont have a bench
Thank you
When doing this is it normal for the MC to introduce new air if the Piston is pushed in too rapidly?
It will be impossible to introduce new air so long as all of the nipples are threaded/sealed properly. It may be possible for air that is already in the cylinder to split in to smaller bubbles making it seam as if there is more air but there is no place for new air to enter. Although the new piston could have a faulty seal. Highly unlikely but possible especially with remanufactured MCs.
@@rivit7615 I don’t know about that, air can enter the MC via the booster side of the piston.
@@mahatmagandification If the MC is damaged then sure. That's in line with what I said about being sealed properly though. A new MC should not have any way for the air to enter.
@@rivit7615 Except that isn't what you said, you were talking about nipples in your original comment...
"It will be impossible to introduce new air so long as all of the nipples are threaded/sealed properly. It may be possible for air that is already in the cylinder to break in to smaller bubbles making it seam as if there is more air but there is no place for new air to enter."
If you're going to edit, you may as well correct "seam" too.
@@mahatmagandification Are we not talking about a new MC install? The nipples would be the only issue because those are the things that were not installed from the factory. You re just being a jackass. All good.
Where do you buy the block off plugs at?
you dont need them, just put them in and bleed them at the wheel.
@lucidbarrier Block off plugs should be available at most auto part stores or online vendors.
Thank you !!
I've never done this and my brakes bleed ok
Thank you!
Why not just use a vacuum bleeder? Zero mess... lol
The mellow growth muhly disapprove because celery distinctly crush onto a changeable self. shrill, orange salt
Where to get plugs?
awesome video