Manager Forum

Hi folks,

I have a 1998 toyota 4runner 4x4 low brake peddle master not leaking and no air. Has ABS and master is not bypassing just low. 237k Has anyone come accross this before?
Thank you,
Dan

How is the rear brake adjustment? Has someone replaced the master and adjusted the rod length?

Look in the back where all the brake lines attach to the rear prop valve. There is a bleeder screw there. Even the smallest amount of air in that valve will trash a brake pedal. I had one and when i saw the bubble of air come out i never would have believed it would have caused an issue like it did.

Rear adjustment good and rear drums are new premium. The guest of course said no one was there before. I will check the push rod and check that prop valve bleeder. Fortunately I prepared the guest for this before I started the service. Thank you both for you posts.
--Dan

I'd double-check for air. And it couldnt hurt to check the rod

Internal leak at master? Caliper slide pin or pins frozen? Rear adjust? air? If you clamp all the rubber hoses off, does the pedal feel better? That will remove calipers and wheel cylinders from equation. If pedal feels good after clamping lines then 1 by 1 remove clamps with someone holding pressure on brake pedal, feel for the drop will id which wheel.

Thank you. Just for kicks I replaced the master and still have the problem. I will certainly go after the clamp process. Good Call I'll get back to you. Thank you.
--Dan