I am stumped.
'91 YJ Sahara with 4.0L
The Jeep sat while I did some engine work. (engine runs great now). Then I took it out for a test run only to find out that a caliper had seized up. Came home and had lots of smoke pouring out of the caliper area.
No problem, replaced the rotors, pads and front calipers. Jeep parts are cheap.
Add a rusted brake line rupturing during the bleeding process just to add to the frustration. Replaced brake line.
Unfortunately, I can't get the brakes to work right. I can pump the pedal up and it will hold pressure. I can back the brake pedal off halfway and then push it down and it works great. When the pedal is allowed to come all the way back up and then I press it down the pedal immediately goes straight to the floor. I can then pump the pedal up to pressure in a stroke or two.
I thought I might have cooked a seal in the brake master cylinder. I figured old brake fluid with some moisture might have boiled up the lines into the master cylinder. So I replaced the master cylinder and bled per the instructions. Jeep parts are cheap.
The pedal still goes straight to the floor for the first stroke and then comes up hard and holds after subsequent strokes.
Is there a peculiar bleeding technique with these jeeps that I am missing?
There is some sort of distribution assembly downstream of the master cylinder. Could that be at fault?
Thanks for any info.
-Britton
'91 YJ Sahara with 4.0L
The Jeep sat while I did some engine work. (engine runs great now). Then I took it out for a test run only to find out that a caliper had seized up. Came home and had lots of smoke pouring out of the caliper area.
No problem, replaced the rotors, pads and front calipers. Jeep parts are cheap.
Add a rusted brake line rupturing during the bleeding process just to add to the frustration. Replaced brake line.
Unfortunately, I can't get the brakes to work right. I can pump the pedal up and it will hold pressure. I can back the brake pedal off halfway and then push it down and it works great. When the pedal is allowed to come all the way back up and then I press it down the pedal immediately goes straight to the floor. I can then pump the pedal up to pressure in a stroke or two.
I thought I might have cooked a seal in the brake master cylinder. I figured old brake fluid with some moisture might have boiled up the lines into the master cylinder. So I replaced the master cylinder and bled per the instructions. Jeep parts are cheap.
The pedal still goes straight to the floor for the first stroke and then comes up hard and holds after subsequent strokes.
Is there a peculiar bleeding technique with these jeeps that I am missing?
There is some sort of distribution assembly downstream of the master cylinder. Could that be at fault?
Thanks for any info.
-Britton