So last weekend I had to put a new master cylinder in. Remanufactured Nissin unit. Put it in, bled everything, good to go. Then today, I got into a left turn lane to go over my uncles to help a friend of ours work on his drag car before I have to go to work. Got into the turn lane, hit the brakes and got behind some cars in front of me. And the brake pedal seemed really stiff. I let off of it and the car didn't move. I was like huh? And then the light turned green, and I drove, and I felt underpowered, like the brakes were dragging. So I had to go up this hill to get to my uncles house and I was seriously ***** out and was only doing 45 mph. Turned into my uncles and my front brakes were smoking. Well mainly the left. So Brad, our friend, had a lower clearance jack, and we jacked it up, and I opened the bleeder on the right front caliper and the brake fluid came shooting out. And then I could finally get the wheel to turn while it was in the air. Same for the left. Then I went back and bled both real quick, and went back home and parked the car.

Any ideas? It seems to be one thing after another........

 

did you bench blead the master cylinder?

 

you need to adjust the throw on the brake pedal. grab a haynes etc so that you can adjust it to the correct vacuum settings.

 

Bleed it and adjust the plunger for correct clearances.

 

it was bench bled.

and we never touched the plunger or anything, like moved it when the old one was taken off.

would that seriously make the brakes lock like that? or could the MC just be messed up because its a remanned unit and the pistons got stuck somehow.

 

The plunger can be out of wack from factory, there is certain distances it needs to be, I'll see if I can screen shot the page on the PDF. I would imagine if it was offset then the brakes could be weak or over-strong.

 

Here it is