help needed

[reckedracing]

i'm at work right now, just went to get some lunch and my brakes are fucked, brake pedal is going to the floor, brake light comes on, limited stopping power...
not loosing any brake fluid...

master cylinder?

pump the brakes with the truck off and the pedal holds, but as soon as i start it up i can pump, get pressure from the pedal, press and hold and it slowly drops...

i know its the wrong forum, but i'm up shits creek and need help asap

 

[posol]

master or a leak in the booster prehaps?

 

[tylonalsnifnfool]

check and see if fluid is leaking from the master cylander into the booster. If it just goes to the floor like you say then there has to be a leak in the system somwhere.

 

[StarBellieAngel]

check the SEALS. this is my issue i have in the teg... the brakes still work, they just suck ass, and worse when it's hot.

 

[reckedracing]

thanks for the help guys (and gals)

changed the master cylinder, brakes are mint

had to nurse it home from work

 

[jdmracer]

its probably the piston seals in ur master cylinder