brake booster 99 6.5

[airhead]

have 99 chevy 6.5 3500hd.I changed brake master cyl.1 week later booster started leaking.found used one for 60.00.that came off 98 model.tried bleeding lines and still have very little brake pedal.don,t know what else to do right now ,need suggestions?

[grimreapersshadow]

try doin a gravity bleed on all your wheels at once for about 30 mins if its just you working on it might have some air trapped in system also check to see all the fittings are tight and not pullin air into the system

[airhead]

thanks for the reply grimreapersshadow,I found out that the push rod was shorter than one came out no getting long enough travel for piston.swtiched push rods and works now I have brakes.