95 5.2 zj no brake pressure after installing extended front brake lines
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Member
Joined: Apr 2016
Posts: 117
Likes: 5
From: Arkansas
Year: 1995
Model: Grand Cherokee
Engine: 5.2
So as the title says I installed some extended brake lines (around 22 inches) in the front and now have no pressure even after pumping the brakes slowly and rapidly the pedal goes straight to the floor. All the fittings are tight and no leaks that I have seen. Everything worked perfectly before the new lines, any help is greatly appreciated
Thanks everyone
Thanks everyone
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Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
Only did lines? get a bottle bleeder. $8 at advanced. Open a bleeder and stick it in, follow directions. One man bleed operation.
CF Veteran




Joined: Nov 2015
Posts: 2,863
Likes: 201
From: syracuse ny
Year: 1997 230,000 miles
Model: Grand Cherokee (ZJ)
Engine: 4.0, new lifters valve job with new springs and exhaust valves, preload set with shims
Sounds to me like you need to watch some youtubes on how to bleed brakes might be helpful.
Last edited by 97grand4.0; Apr 30, 2016 at 03:58 PM.
Thread Starter
Member
Joined: Apr 2016
Posts: 117
Likes: 5
From: Arkansas
Year: 1995
Model: Grand Cherokee
Engine: 5.2
I know how to bleed the brakes I just didn't have time after installing the lines I just pumped them a little after I installed them, I know I should have done it I was kinda rushed I'm a stay at home dad with 3 kids man so I usually have very little time to actually get out and work on my jeep.
CF Veteran
Joined: Feb 2010
Posts: 12,367
Likes: 23
From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Really? Brakes 101, any time you open the brake hydraulic system to atmosphere you MUST bleed them. If you replace a left front hose, you bleed the left front. You don't have to bleed the whole system, only the part of the system that was open to atmosphere.
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Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 741
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
Here's what I would do. Open the front bleeders (both sides). Hit the brake pedal to the floor then release. Wait until fluid starts to run out of the bleeder screws, then close them. Try the brakes again. Hitting the brakes with the bleeders open allows the air in the hoses to blow the fluid in the calipers out, thus starting a flow of fluid to fill the hoses and calipers again. Make sure the reservoir doesn't go dry or you'll have to start from square 1 with the WHOLE system.
This is known as a "gravity bleed." It's about 90% effective if you are alone and can't fully bleed the brakes properly. You've got to get the air in the hoses out before you'll get ANY pressure.
This is known as a "gravity bleed." It's about 90% effective if you are alone and can't fully bleed the brakes properly. You've got to get the air in the hoses out before you'll get ANY pressure.
Last edited by dave1123; May 1, 2016 at 10:09 AM.
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Joined: May 2015
Posts: 818
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Year: 1994
Model: Grand Cherokee
Engine: 5.2L Magnum V8 220hp 285ft-lbs
The ZJ requires three bleeds to be done properly, as-shown in this reply.
My tool for the fluid is the Motive Products Power Bleeder. It makes this an easy one-man operation.
My tool for the fluid is the Motive Products Power Bleeder. It makes this an easy one-man operation.
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