dead spot in brake travel after flushing

[RatLabGuy]

Rotated my tires, figured while I was at it I might as well chenge the brake fluid... only 54k miles on the car, but figured after 5 years the original fluid must be pretty cruddy in there (I'd syphoned/refilled the bottle before but never a real flush). FYI, at the wheels it was surprisinglu clean.

Anyhow, I now have an odd bit of travel in teh pedal before it starts to firm up and actually stop the car. It's stops fine, and the pedal dosn't (quite) make it all teh way to the floor. However about the first 6" (guess) of travel, nothings happening. In fat I can hear a groaning/squeaking sort of sound coming from the lever behind the pedal, I'm guess this is just the travel of that thing uninhibited. Previosuly it was fairly firm almost immediately.

Think this is from air in the Master Cylinder? First time I've done brakes on this car so I'm not familiar w/ the misc behavior of this model/style MC.
FYI, I bled them by the one-man vacuum-pump-at-the-wheel method, so no reason I may have blown a seal overcompressing the MC or something. I was pretty cautious about sucking the container dry, but who knows, may have trapped a little in there.

Oh yeah, w/ teh car off, a few pumps and it will get nice and firm.

 

[jtlinna]

sounds like air somewhere.. id bleed them again.. driverside front then passenger rear.. passenger side front.. drivers rear.. maybe even bleed the MC itself if that dosent help..

JT

 

[P-Funk!]

^negative! It def'ly sounds like air, but you bleed from furtherest caliper FIRST (r/r, then l/r ) , then the fronts (r/f and lastly l/f).

If the master cyl went dry - you have to start over... Check after each cylinder is bled and top off.

 

[RatLabGuy]

^negative! It def'ly sounds like air, but you bleed from furtherest caliper FIRST (r/r, then l/r ) , then the fronts (r/f and lastly l/f).

If the master cyl went dry - you have to start over... Check after each cylinder is bled and top off.

Good, that's what I tought.

When I did them, I did it P-R, P-F, D-R, D-F. I knew this wasn't right... but that's the order I had access to them while rotating the tires.
The logic of rotating a set of tires by yourself, doing it rear-straight-forward and front-crossing-to-rear while only using 1 jack and 1 stand is a bit painful (but fun!)...