brake problems

[norcalyoter]

My brake pedal sinks to the floor.  If I pump the brakes it holds pressure fairly well.  when I release the brake and press it again while driving, it sinks to the floor again.  I bled the Master cylinder on the sami, and bled the brakes according to the manual, and I still have the prob.  I bought a used MC and installed and still have the problem.  Unless I didn't bleed enough I'm thinking it's another bad master cylinder.... Imput?

[toybuilt]

You sould try unbolting your master from your brake booster and see if it is all wet with brake fluid. If thats the problem then its a bad master cylinder.

[RustyToy]

have you used a brake bleeder... its for when you have to do it by your self. They work pretty good... has the truck bin sitting for awhile?

[norcalyoter]

been using the two people method

[kneedownnate]

Did you bench bleed the mc?  If you put it on dry you're kinda pissin in the wind.

[sblacks91]

Make sure your rear brakes are adjusted, sometimes they can get far enough out to do what you are describing. (assuming the rear are drums)

[kneedownnate]

Yea, they're drums.

[kneedownnate]

Any updates?