open the rear all the way (for most brake pressure) bleed.

like said earlier, you MUST MUST MUST bench bleed the master cylinder.

 

hissing sound? bad booster?

 

What exactly does bench bleed mean ?

 

Bench Bleeding of a master cylinder saves a lot of time and problems

 

all it is is 2 plastic tubes that screw into the M/C and you keep them submerged in brake fluid.......then you hook up your hard lines again and continue the bleeding.....

 

So you're saying...the MC still has air in it even though I've added brake fluid to it several times during my bleeding process ?

That page says "it is a good idea to bench bleed the MC before installing it in the car" and "Now you are ready to bleed the brakes in your car and it should be a lot easier than if this step was avoided."

good idea and should be easier... doesn't sound to me that taking my MC back off the car to re-fill it with fluid and manually pump the damn thing before replacing it and going through the entire bleeding process again will make the calipers grab tighter and also stop the hissing sound.

How about the booster being bad or having the wrong MC for the booster?

I have new calipers & rotors for an '88 thunderbird turbo coupe, same ones found on a Town car, My MC is for a '93 mustang my car is a '90 so the booster if not bad should work fine with this MC.

 

hmmm

 

you don't have to take the master off to bleed it. just unbolt the lines and use the plastic tubes like uncle pat said

 

I'll try it, but I'm still trying to wrap my head around this.... take the hardlines off from the MC and replace with hoses dipped into jars of brake fluid and pump my brake pedal in effort to fill the MC with fluid.

Isn't it filled with fluid now since I've been pouring fluid down it during the caliper bleeding processes I've done twice ?

Wont taking the hardlines off then adding rubber hoses then removing them to reconnect the hardlines again going to increase my chances of getting air in there ?

Seems to me I'm going backwards here, maybe it's just me

 

is your power booster fucked??