I am about to pull the motor out of my Civic and previously I had a problem of my brake fluid constantly going low every week. I checked for leaks and the only spot I noticed brake fluid was on the lower half of the proportioning valve.

Does this have some kinda gasket or can it be fixed? Should I just replace it - if so, will one of a 89 91 Civic fit ?

Thanks.

 

tighten it?
use a flare wrench though.

if you've done that and you don't want to replace it i'd remove it, throw some blue loctite crap on it, and it'll be good.....until you ahve to remove it one day..

 

Well I could not get the darn bolts off and some of them got messed up so I was like forget it and I jb welded it around the gasket but it still leaking - maybe I should just jb weld the whole darn thing lol

 

Well the update on this mysterious leak is that it was NOT the valve! While the brake pedal was being pressed I watched around the Prop. Valve and guess what? One of the brake lines that's like 3 inches to the right had a pin hole leak in it and was spraying brake fluid DIRECTLY onto the Prop. Valve!

So that was the problem and maybe this will be of help to someone else

 

Well just to update, since it was a pin hole leak going to the rear wheel I was debating wether to replace the whole line, do a small spot weld on it, or put some JB Weld on it. Well after some good responses to one of my previous posts about this problem, I decided that I should replace the whole line.

Well to make a long story short, I spent like over 1 hr trying to get that bolt loose at the prop. valve and no luck even with vise grips, etc. Well then the girl at Advance ( ) tells me that I should use a "Compression Fitting and a piece of steel brake line" - basically cut like 2 inches off where the hole was and use what she said.

I was very skeptical but for under $6 (for everything) I had nothing to lose ... to make a long story short - it worked like a charm!! ZERO leak or anything.

Has anyone else ever used these compression fittings? I can't find the post but I remember reading that someone on here used it to fix a fuel line...

 

fuel lines and compression fittings might work. I'm still up in the air about that one, but compression fittings and brake lines do not mix well IMO. Brake lines can be subjected to very high pressure, like when you jam on your brakes in an emergency. And it's hard to say "oh, well I'll just never jam on my brakes" cuz when you're out there on the road and if you ever get to that moment when it's either brake hard or hit the guy/gal in front of you, what are you going to do?

Compression fitting might pop, it might not. Double flared fitting is what the factory put in there for a reason, and look how long it's lasted. Just food for thought. Oh yeah, in many states compression fittings in brake lines are illegal and will not pass inspection because they are considered "unsafe" for applications like brake lines.




Modified by rexracerboy at 10:18 AM 6/26/2007