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Brake wear

 
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Old 04-22-2011, 12:14 AM
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Brake wear

About a week ago my brakes started going soft and I attributed it to my master cylinder going out, the master cylinder is fine and after inspecting my brakes, the rotors are extremely worn out.
Can this cause my car to have little braking power and allow air to get into the lines?
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Old 04-22-2011, 02:24 AM
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Re: Brake wear

First thing, change the rotors and the pads. Second thing, get a friend and bleed the brakes. Front left, rear right, rear left, front right. Have your friend press down on the brake pedal while you bleed. If the fluid isn't a light yellow color, put new dot3 or dot4 fluid. Keep bleeding the brakes if you have spurts of fluid between brake presses. When you have steady stream, shut it. Might as well check the lines too. One pinhole in one will give you grief.

Then last thing is the pedal adjusting. Have you done brakework?
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.

Last edited by Sideswipe SI; 04-22-2011 at 02:33 AM.
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Old 04-22-2011, 03:30 AM
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Re: Brake wear

Quote:
Originally Posted by Sideswipe SI View Post
First thing, change the rotors and the pads. Second thing, get a friend and bleed the brakes. Front left, rear right, rear left, front right. Have your friend press down on the brake pedal while you bleed. If the fluid isn't a light yellow color, put new dot3 or dot4 fluid. Keep bleeding the brakes if you have spurts of fluid between brake presses. When you have steady stream, shut it. Might as well check the lines too. One pinhole in one will give you grief.

Then last thing is the pedal adjusting. Have you done brakework?
Where did you get that brake bleeding sequence from? Shouldn't it be furthest from the master cylinder?
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Originally Posted by twokexlv6coupe View Post
if it's knocking, don't answer it. it's prolly nothing but bad news bears.
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Originally Posted by Brash22 View Post
As much as I'd love to see this done, I offer you the same comment I offer everybody else: There's no point in being the first to do something if you're second across the finish line.

Last edited by Vipers4Life; 04-22-2011 at 03:54 AM.
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Old 04-22-2011, 03:52 AM
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Re: Brake wear

There's always a debate Vipers. I usually start on the side closest to my garage door, lol. The point being since a majority of cars run dual diagonal brake line systems, bleed accordingly, just make sure there's no leaks and no bubbles.

Think maybe the car is boiling brake fluid? Couple of miles hard driving will do it, with no rotors maybe? Let's wait and see.
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Quote:
SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.
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Old 04-22-2011, 04:02 AM
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Re: Brake wear

Quote:
Originally Posted by Sideswipe SI View Post
There's always a debate Vipers. I usually start on the side closest to my garage door, lol. The point being since a majority of cars run dual diagonal brake line systems, bleed accordingly, just make sure there's no leaks and no bubbles.

Think maybe the car is boiling brake fluid? Couple of miles hard driving will do it, with no rotors maybe? Let's wait and see.
Ah lol, I see that. In school I was told always farthest, in the honda manual it says closest, now I'm seeing some say the diagonal brake bleed lol. With very, very, worn out rotors I could definitely imagine the fluid boiling since the rotors will be hold less heat being absorbed into the caliper more boiling the fluid. One reason why I will never cut my rotors!
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Quote:
Originally Posted by twokexlv6coupe View Post
if it's knocking, don't answer it. it's prolly nothing but bad news bears.
Quote:
Originally Posted by Brash22 View Post
As much as I'd love to see this done, I offer you the same comment I offer everybody else: There's no point in being the first to do something if you're second across the finish line.
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Old 04-22-2011, 04:18 AM
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Re: Brake wear

You could cut a rotor if the pad wasn't seated right and the rotor itself has 7k miles left. Sure you reduce it to like 2k, but that is the band-aid people choose if strapped for cash. I knew people that do it 2 or 3 times on one set. That's nuts, besides ignoring a real problem.
__________________
Quote:
SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.
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Old 04-22-2011, 04:32 PM
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Re: Brake wear

I was told to cut them, by a mechanic I knew, but I feel a lot better getting new brakes.
I got 3 different thoughts on what is wrong with my brakes.

First my dad took a quick look and said it was the master cylinder, but we ruled that out the next day.

That day we ruled out the master cylinder because it was working correctly and no air was coming through when pressing the brakes my personal friend who is a mechanic saw that my rotors were worn and decided the best thing to do would be changing the rotors then bleeding.

A third mechanic said to reface (cut) the rotors because he believes they are still good and suggests a leak in one of the cylinders or keys he called them inside the black thing the master cylinder is attached to (name of this? anyone?).

What should I do? At this point this has gone past my knowledge I am terrible at brake systems.
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Old 04-22-2011, 08:34 PM
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Re: Brake wear

definitely rotors and pads. cutting is usually not an option, most mechanics will do the job, see it was a mistake and charge you for the cut, then charge you for the new rotors AND INSTALLATION.

If not brake savvy, let the mechanic do the work, you tube has videos, but on the prelude you need to use a "powered" ratchet tool to remove the screw holding the disc on. also 2 "pry bolts" to wiggle the rotor off. I forget the measurement.
__________________
Quote:
SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.
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Old 04-22-2011, 09:10 PM
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Re: Brake wear

I'm going to let the mechanic do the work. No one has taken any dollars out of my pocket yet. The engine work that needed to be done was all fine for me to do, but I am not good with brakes.
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Old 04-22-2011, 09:18 PM
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Re: Brake wear

Quote:
Originally Posted by JoshuaaXD View Post
I was told to cut them, by a mechanic I knew, but I feel a lot better getting new brakes.
I got 3 different thoughts on what is wrong with my brakes.

First my dad took a quick look and said it was the master cylinder, but we ruled that out the next day.

That day we ruled out the master cylinder because it was working correctly and no air was coming through when pressing the brakes my personal friend who is a mechanic saw that my rotors were worn and decided the best thing to do would be changing the rotors then bleeding.

A third mechanic said to reface (cut) the rotors because he believes they are still good and suggests a leak in one of the cylinders or keys he called them inside the black thing the master cylinder is attached to (name of this? anyone?).

What should I do? At this point this has gone past my knowledge I am terrible at brake systems.
If the master cylinder is bad it will either leak fluid, or internally the cup seals go bad causing the brake pedal to sink to the floor when at a stop. The big black thing he is referring to is the brake booster. If the brake booster was bad the pedal would be very hard to press. If that mechanic swears the rotors are good to be cut, tell him to measure the thickness of the rotors with a micrometer and show you that the cut will not go below the minimal thickness specifications of the rotor.
Quote:
Originally Posted by Sideswipe SI View Post
definitely rotors and pads. cutting is usually not an option, most mechanics will do the job, see it was a mistake and charge you for the cut, then charge you for the new rotors AND INSTALLATION.

If not brake savvy, let the mechanic do the work, you tube has videos, but on the prelude you need to use a "powered" ratchet tool to remove the screw holding the disc on. also 2 "pry bolts" to wiggle the rotor off. I forget the measurement.
Hmm, an impact ratchet is indeed the best for removing the 2 rotor screws but you can get away with just using a regular screwdriver and hitting it with a hammer before you turn it. And the pry bolts are mandatory, usually a nice hammer does the job just fine to get the rotors off!



I would ultimately say new rotors and pads(if needed) and then bleed the system. If the pedal gets soft again then it is leaking somewhere.
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Quote:
Originally Posted by twokexlv6coupe View Post
if it's knocking, don't answer it. it's prolly nothing but bad news bears.
Quote:
Originally Posted by Brash22 View Post
As much as I'd love to see this done, I offer you the same comment I offer everybody else: There's no point in being the first to do something if you're second across the finish line.

Last edited by Vipers4Life; 04-22-2011 at 09:21 PM.
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Old 04-22-2011, 10:44 PM
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Re: Brake wear

True, But When it was time for me to change my rotor's the actual bolts holding the rotor in place were stripped, there weren't even corners in the star. I had the two bolts ready, never got that far, dammit. Then the dirty look the mechanic gave me when he had to torch out the screw... Priceless.
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Quote:
SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.
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Old 04-22-2011, 11:00 PM
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Re: Brake wear

I would love to take a torch to several cars! Though last time I used a torch I lit a bunch of rubber things on fire.
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