Brake proportioning valve nightmare

[Gir8990]

Hey gang me and another me ever are having brake issues with brake proportioning valve. My case last owner took the rear sensing valve out and brake line and replaced the proportioning valve what looked like a xj one. It held pressure but I had no rear brakes at all. So I ordered up a new one and installed it and new fittings and 3/16 brake lines and the darn thing weeps around the fitting under pressure. I got another valve from Morris 4x4 under warranty. Any help or tips would be wonderful. Thankyou. 

[Pete M]

by no rear brakes do you mean you are unable to bleed anything out of the rear lines? 

[Gir8990]

Fluid goes back there.  But it always leaks at the fitting where the rear brake line meets the proportioning valve. I’ve replaced lines and fitting reflaired it twice same thing weeps and then I lose brakes. 

[Gir8990]

Where my thumb is it leaks there right past the fitting. 

[jdog]

pictures of flairs

[Gir8990]

I’m not by the Jeep but I used double inverted flairs

[ghetdjc320]

Are you using steel line or copper nickel? Are you using one of those bar and clamp style flaring tools or a die style? 

[Gir8990]

Steel line. And. We used a bar and clamp style tool like you would get at a auto parts store

[jdog]

what year prop valve? they went from a standard to a metric fitting, still would like pictures when you get a chance

[Gir8990]

My Jeep is 1990 and that valve is brand new from Morris 4x4

[Gir8990]

I did put pictures of the valve in this thread

[jdog]

Let me clarify what year jeep is this prop valve supposed to go to, did you order it for a 90? & pictures of the flair

[Gir8990]

Yes I ordered the valve for 1990 and I’ll get the pic of the line flair when I can.  

[Eagle]

18 hours ago, Gir8990 said:

Where my thumb is it leaks there right past the fitting. 

 

Yes, that is an XJ (or ZJ) proportioning valve. If it's weeping around where one of the fitting goes into the valve body, you have a bad flare, not a bad valve.

[Gir8990]

Then I’ll shall flair till the cows come home lol

[Gir8990]

Well it’s leaking from the port that goes to the rear brake line. But I’m guessing it’s the same answer.