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      09-30-2011, 05:19 PM   #1
06E90Rostik
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Need help: Nissan Murano brake fluid leak

OK, since Murano forums are pretty much dead I wanted to get a quick answer since the car is on jacks and I want to fix this today.

Here is a problem, brake fluid started leaking some time ago, but I never paid much attention to it, since it was very little. Over the course of 2011 I maybe added 1-2 ounces. So today I jacked the car up for a routine oil change and noticed the driver's side front brake caliper was greasy. I looked at the passenger side, and it's completely dry and clean.

So my question is, can I just re-tighten the bolt, or it's more complicated than that? Or I would have to change the whole front-left brake line?

Here is a picture I took.

Also note to people, never buy 1 gen Muranos (2003-2007). They suck balls. 2007s (what I have) still have common problems that 2003s had, Nissan never fixed the issues. As soon as I will fix this I am getting rid of this, it was the first non-German car and it will be the last.
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      09-30-2011, 05:28 PM   #2
Hey Ant
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I would recommend replacing the brake hose with the leak, then do a brake bleeding procedure. What could have happened is, the connector may have a crack or it could be loose. Try turning it just a bit to check it turns any more, if it's already tight on there, replace it... but replace it anyways for safe measures, I'm sure they shouldn't cost more than $50.00 at a local automotive store.
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      09-30-2011, 06:05 PM   #3
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Quote:
Originally Posted by Hey Ant View Post
I would recommend replacing the brake hose with the leak, then do a brake bleeding procedure. What could have happened is, the connector may have a crack or it could be loose. Try turning it just a bit to check it turns any more, if it's already tight on there, replace it... but replace it anyways for safe measures, I'm sure they shouldn't cost more than $50.00 at a local automotive store.
OK, I was able to do about 20 degree turn, don't want to apply excessive torque. Tried passenger side and it's complete snug, doesn't even budge. So I guess the line is fine after all.

Have to just clean it really well and check back in a few days for leaks
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      09-30-2011, 06:12 PM   #4
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How do you add 1-2oz of brake fluid? Brake fluid is hydroscopic (sp?)... you can't save it and use it for later. So you're just wasting a whole can that's laying around every time...?
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      09-30-2011, 06:56 PM   #5
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Quote:
Originally Posted by JoosyJoos View Post
How do you add 1-2oz of brake fluid? Brake fluid is hydroscopic (sp?)... you can't save it and use it for later. So you're just wasting a whole can that's laying around every time...?
True, brake fluid sucks in moisture from the air. BUT, I close the lid tightly and keep the bottle in a thick plastic bag with silica gel packets. So topping off is possible.
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      09-30-2011, 09:10 PM   #6
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Quote:
Originally Posted by JoosyJoos View Post
How do you add 1-2oz of brake fluid? Brake fluid is hydroscopic (sp?)... you can't save it and use it for later. So you're just wasting a whole can that's laying around every time...?
It's hygroscopic, as long as the cap is put back on tight there is no way it can absorb water from the atmosphere.

But more importantly why would you ever let a single drop of brake fluid go unchecked for so long? Your lucky you didn't kill yourself or someone else.
I am amazed you would take the time to change your oil, that seems so unnecessary it wasn't even leaking.

Seeing that it was loose for so long I would replace both of the crush washers that attach the the brake line to the caliper
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      09-30-2011, 09:50 PM   #7
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have someone step on the brake while you look for leak. Do it safely of course. Also, turn the wheel all the way left and then right to make sure the hose is not caught on something when turned, thus causing it to leak.
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