No Brake Fluid @ New Driver Front Caliper

[Granni44]

Hello All,

I had a bad drivers side caliper. Piston wasn't functioning. So replaced both front calipers (Pads and rotors also). Went to do a vacuum assisted bleed. Both rear brakes bled normal. Bled the passenger front went ok. Took awhile as there seem to be quite a bit of air. Finished that and started on the driver side. Hooked my set up, cracked the bleeder. Nothin…. Hmmmm, i take off the line at the caliper. Nothing. Not knowingthe cause i slammed my head into a brick wall (read as, I bled the other three again. Back to the drivers, no fluid still.

Full disclosure the vehicle was driven a bit when the original caliper was acting up.

That said, any thoughts on what I may be able to do to solve this? I’ve read of a possible issue with the line? I am a garage mechanic.

Also no leaks, and with the motiv setup, the air was holding steady in the tank.

I am also wondering if the caliper going bad was a result of no fluid getting there?

Gregg

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[Left Field]

Perhaps work your way back up to the ABS module, checking for fluid?

You've already checked at the caliper, so next check where the steel line connects to the caliper hose near the frame (collapsed hoses are not real common but can occur).

If no fluid there then go up to the ABS module and loosen the brake line that goes to the front right. being careful to contain any leaking fluid to avoid paint damage.

If no fluid coming out of the ABS it might be the ABS module has clogged or its solenoid for that wheel has stuck. An ABS module failure would be less fun...

LF

 

[WhereRU_A-A-Ron]

First of all, I highly doubt you’re a “garbage” mechanic. Garbage mechanics are the ones on the Just Rolled In YouTube channel “patching” tires with duct tape, using Flex Seal on brake lines, and installing custom exhaust with welds that look like they were done by a chihuahua. They wouldn’t know how to fill up their washer fluid reservoir let alone do anything on brakes.

When you say the piston wasn’t working, do you know why? The brake line not bleeding could be secondary to whatever was happening in the first place.

 

[GtX]

Have you tried bleeding it with a second person on the pedal?

 

[Granni44]

Thank you all so for, any additional suggestions would be appreciated.

I am going to check the lines tomorrow. I was avoiding that as this jeep spent most of its life in western New York. Read that as way too much rust. But I will work backwards towards the abs module.

As far as the initial cause, I am leaning towards this fluid issue has been the root of the problem And it may have not been flowing as it should. If that’s the case this is what I get for not doing a yearly bleed and discovering this sooner.

I have not done the second person on the brake pedal yet. But it is an option I will attempt.

Live and learn. Crossing my fingers for a collapsed hose at this point.

Again please keep the suggestions coming if there is anything else these folks haven’t already brought up.

Gregg

 

[jav361]

Just a thought...I was having similiar brake issues, I found the metal brackets on the rubber brake hoses building corrosion inside of metal bracket causing my brake lines to only allow pressure to engage the caliper but not releasing completely. Solution was to cut off metal brackets,You can do this with tire removed, just be very careful with the hose, I used a metal wheel cutter, to weaken metal then pried bracket open with pliers to pull rubber hose out of bracket. we live near saltwater and do alot of beach driving.

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