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-   -   Brake Pressure (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/brake-pressure-454199/)

Torch101 08-16-05 10:17 PM

Brake Pressure
 
It takes alot of foot pressure to stop. How do I fix this?

arghx 08-16-05 10:22 PM

You might need to bleed your brake system, or even replace the brake master cylinder. I'd also recommend stainless steel brake lines (like $100 from Mazdatrix) as well as adjusting your brake booster pushrod.

Marcus_F 08-16-05 10:23 PM

Sounds like the vacuum boster may have a leak. I'd check the vacuum line that goes to it. This is especially true of the motor mounts are broken.


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Torch101 08-17-05 01:43 AM

Whats the cost?

RETed 08-17-05 05:52 AM

More than $1? :)

Seriously...find out what's wrong first.

If the brakes just need to be bled, then minimally it's a quart of brake fluid and help from a friend.
If this problem has been around a while, I would worry about corroded internals from all the moisture sitting in the brake fluid. :(

If it's brake rotors or brake pads, then they need to be replaced.
I dunno how much stuff like this cost in your area, but I'd be shooting in the dark trying to give you an estimate on price.
eBay stuff is like $20 per brake rotor and maybe another $40 for brake pads?

If it's a vacuum leak to the brake booster, just replace the hose or the clamp.
Relatively cheap and inexpensive.

If it's the brake master cylinder, then it needs to be rebuilt or replaced (recommended over rebuilding).
Depending on your model, brake master cylinder rebuild kits or replacements vary in price.

Bottom line?
Find out what's wrong first, then go pricing parts locally.


-Ted

Torch101 08-17-05 12:06 PM

Sorry im kinda new to this. Should I just start from the first option you gave me and work my way down?

RETed 08-17-05 12:17 PM

Okay, let's try and start from the top...

Can you locate the brake fluid reservior under the hood?
What color is the brake fluid in the reservior?
Is it light golden color honey colored?
Or is it dark and almost black?

If it's black, stick you fingers in it.
Does it feel slimey?
If the brake fluid is dark and slimey, you should bleed the entire system and get fresh fluid in.


-Ted

HAILERS 08-17-05 02:22 PM


Originally Posted by Torch101
It takes alot of foot pressure to stop. How do I fix this?

I'd think BRAKE BOOSTER problems IF the brakes were just fine recently. If this is a car that you just bought and don't know about, then it could be just a bunch of things. Everything from frozen up calipers to a rusted up brake master cylinder.

So that's why they ask in the above post to give some hints about the car. I'd be especially interested in how long the condition has existed and if the brakes had worked good recently.

Torch101 08-24-05 01:45 AM


Originally Posted by RETed
Okay, let's try and start from the top...

Can you locate the brake fluid reservior under the hood?
What color is the brake fluid in the reservior?
Is it light golden color honey colored?
Or is it dark and almost black?

If it's black, stick you fingers in it.
Does it feel slimey?
If the brake fluid is dark and slimey, you should bleed the entire system and get fresh fluid in.


-Ted

It's a goldish color, should I bleed the entire system anyway? :confused:

RETed 08-24-05 02:28 AM

Does the fluid feel slimey?
Fresh brake fluid should not feel super slippery...


-Ted

Torch101 08-24-05 11:30 AM

It rather feels slippery somewhat not really slimey.

But now ever since two days ago my hand brake lights have been going on :confused: and off. (BTW my handbrake doesn't even work)

My brakefluid is at FULL

Torch101 08-24-05 06:09 PM

The hand brake light goes away at about 15-30min. :confused: of driving.

Torch101 09-18-05 12:43 AM

Well I realized my brake fluid was running low and there were no signs of leaking anywhere so my mechanic came to a conclusion that it was the slave cylinder(brake fluid was burning/evaporating slowly)

So what I'm asking is where can I find the slave cylinder for a great price?

hanman 09-18-05 10:16 AM

The slave cylinder is for the clutch. There is a master cylinder under the hood for the clutch and one for the brake. Do you know which one is which?
If the slave cylinder for the clutch is leaking, I would replace the slave, the master and the hydraulic hose.

Syonyk 09-18-05 12:19 PM

Which canister did you check? The brake system reservoir is rectangular, the clutch system one is cylindrical.

-=Russ=-

Torch101 09-18-05 02:13 PM

sorry I meant i need a new brake master cylinder...where may I find those?

Syonyk 09-18-05 03:06 PM

Look over in the "Parts for sale/wanted" section. There are a good number of master cylinders & boosters around.

However, for a master cylinder, it's fairly cheap to get a reman product from your local parts store. Or, you can rebuild your existing one.

-=Russ=-


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