oh crap no brakes!

[jt thomas]

brakes almost bottem out and sounds like its sucking air at the booster/master cylinder area whats the deal? it falls abit then theres brakes. not like when there is air in the lines but like its sucking it in

 

[Turdle]

Move the vacuum line on the brake booster around to see if the sound changes. The grommet may be leaking. The gray "elbow" is actually a one way valve, and it may have failed also. When disconnecting the vacuum line while engine is off, you should hear a vacuum noise if the one way valve is operating correctly.

The entire booster might be leaking also, this does happen. You should still have brakes, but it will be hard to push the pedal. Correct?

 

[jt thomas]

will try this thanks..keep you posted

 

[jt thomas]

ok went outside cranked truck turned it off pulled the elbow out sounded like a explosion of air. there seems to be a little wet fluid buildup just under mastercylinder like it has run down the booster and was wiped clean