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-   -   losing brake fluid... (https://www.rx8club.com/series-i-trouble-shooting-95/losing-brake-fluid-172772/)

shadycrew31 04-29-2009 09:43 PM

losing brake fluid...
 
Im going to sound like a noob for a bit..

so 2 things have happened since I last filled and bled my brake fluid 4k ago.

1. My clutch pedal snapped off I got it fixed, but now has a shorter engagement point.. That means its pushing more fluid becuase of the distance from the pin to the master cylinder. it's hard to explain but it works in my head.

2. my brake pads are very close to metal on metal

I cannot see any noticeable leaks I am stumped...

Over the past month my brake fluid went from 2 cm below max to right at the min line..

Pressure is great across the board :banghead:.

Any Ideas thoughts etc?

Spinning Sushi 04-29-2009 09:46 PM

Adjust your clutch pedal, it's located right under the clutch pedal assembly.

Your brakes are fine, it's suppose to be like that.

Easy_E1 04-29-2009 09:47 PM

If you have a leak,,,
Your just going to have to crawl around till you find it. Check all your Brake calipers. And look around the brake Master Cyl and Clutch Master and Slave Cyl's.
You might look under the car at the brake lines to make sure on of them isn't leaking.

Spinning Sushi 04-29-2009 09:50 PM

Oh, and your assumption on how the clutch pedal pushing more fluid thus creating a shorter clutch engagement is wrong.

We can work on your clutch at the next beach cruise. :)

shadycrew31 04-29-2009 09:59 PM


Originally Posted by Easy_E1 (Post 2995848)
If you have a leak,,,
Your just going to have to crawl around till you find it. Check all your Brake calipers. And look around the brake Master Cyl and Clutch Master and Slave Cyl's.
You might look under the car at the brake lines to make sure on of them isn't leaking.

Yea I did that I didnt see squat. But I know the stuff doesnt vanish into thin air. I need to get it on a lift and really inspect it.

This type of crap always happens right before a road trip doesnt it...

shadycrew31 04-29-2009 10:00 PM


Originally Posted by Renesis SE3P (Post 2995857)
Oh, and your assumption on how the clutch pedal pushing more fluid thus creating a shorter clutch engagement is wrong.

We can work on your clutch at the next beach cruise. :)


I'm going to adjust it sooner than that 6 puck coming in shortly. But If I don't get to it I'll let you know thanks man!

Mazurfer 04-29-2009 10:06 PM

Well.............if no lift available, then i'd pop off a wheel at a time, have someone pump the brakes, and take a look. Especially at the bleeder screws......you may have a leaker.

Jedi54 04-29-2009 10:22 PM

^^^ what he said!
one wheel at time, two man job.
Adjust the clutch pedal, there's intructions around here somewhere.

shadycrew31 04-29-2009 10:44 PM

Yea I got the clutch pedal adjustment instructions.

I think I know where the leak is but I don't want it to be the thing thats leaking..

Im hoping is bleeder valve somewhere..

FML

Mazurfer 04-30-2009 07:22 AM

So you think you know where it is huh? Oh no.....that don't sound good.
I know yours can't be the same, but I just had to replace an 8 foot long piece of brake line in my beater 1994 Rodeo...............it actually wasn't that bad, but was a bitch to get it in there.
I'm guessing you think it might be the master cylinder?????

shadycrew31 04-30-2009 11:31 AM

no I'm thinking its the hard line that could be loose do to a stripped nut after a SS line install... We tightened it as much as possible I did some heavy braking and check the line again.. Maybe it finally gave out.

I will check today. I also need to check the undercarriage I scraped something fierce on a bump the other day.

Nubo 04-30-2009 03:29 PM

Usually a leak means that air gets into the system, and you would experience a spongy brake pedal or clutch pedal or both.

Brake wear will lower the level in the resevoir, as the caliper pistons expand to keep the pads against the rotors. You mention the brakes are nearly worn out. That could account for the difference if you've had a lot of brake wear in the last few months.

Add fluid to raise it back to max and keep a close eye on it, or better yet deal with the brake pads. Remember if you put new pads on, to be careful to prevent overflow of the resevoir as the caliper pistons are backed out.

shadycrew31 04-30-2009 03:34 PM


Originally Posted by Nubo (Post 2997140)
Usually a leak means that air gets into the system, and you would experience a spongy brake pedal or clutch pedal or both.

Brake wear will lower the level in the resevoir, as the caliper pistons expand to keep the pads against the rotors. You mention the brakes are nearly worn out. That could account for the difference if you've had a lot of brake wear in the last few months.

Add fluid to raise it back to max and keep a close eye on it, or better yet deal with the brake pads. Remember if you put new pads on, to be careful to prevent overflow of the resevoir as the caliper pistons are backed out.

That was another theory I had... I always bleed the lines though I never push fluid back, its a big nono in my book.

But yea I think the best thing for me to do is top off the fluid and monitor it.

now I just need to find a local shop that has some ATE or Motul...

Thanks for the help guys I'll return with pics or info.

Razz1 04-30-2009 04:46 PM


Originally Posted by Nubo (Post 2997140)
Usually a leak means that air gets into the system, and you would experience a spongy brake pedal or clutch pedal or both.

Brake wear will lower the level in the resevoir, as the caliper pistons expand to keep the pads against the rotors. You mention the brakes are nearly worn out. That could account for the difference if you've had a lot of brake wear in the last few months.

Add fluid to raise it back to max and keep a close eye on it, or better yet deal with the brake pads. Remember if you put new pads on, to be careful to prevent overflow of the resevoir as the caliper pistons are backed out.

Bingo!

Thats why you open the cap to revmove some brake fluid or put a rag there when you replace the pads. Open up cap and watch the fluid rise as you turn in the piston.

You need the MC cap to be off to relieve pressure when replacing pads.

I have brake pads with very few miles on them if you need a set PM me.

shadycrew31 05-01-2009 12:00 AM

So I pop my hood to check on the fluid level and umm..

IT"S BACKKKK.

I am very confused.

Razz1 05-01-2009 10:03 AM

Fluid gets hot and expands. Plus it is hydroscopic. You are creating an enviroment for it to create water via condensation.

Time to flush!

shadycrew31 05-01-2009 11:42 AM

Balls

I just flushed in September...

GRRRR.

OK razz your box is full but I replied asking when your going to be around tonight.


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