Re: strange brake behavior

All it takes is a sticky check valve. The original problem seems to have 
occurred in a really non level position while running at idle.

>> All my driveway testing (following the FSM instructions) comes out
>> just perfect.  Anybody who tests it now will conclude I imagined the
>> whole incident and wonder what I was smoking!
> 
> I had a brake booster that did that once.  Worked fine in the driveway, 
> but enter a parking lot with a lot of Mercedes and Audis in it, the 
> pedal got rock hard and you had to stand on it just to slow down.  After

> a couple of close calls I got a new booster.
> 
> Earle