[s-cars] Brake Light Indicator and Bomb - clarification

[Joe Petersack]

re: my previous message.  The brake light usually stays on for about 
15 seconds after sitting overnight.  Once started, all is OK.  Before 
the last bomb change, the brake pedal would get firm after just a few 
hours of sitting (and the brake light would stay on for perhaps 30 
seconds).  Currently pedal is OK after overnight.
So, is there a good way to flush system to get rid of crud/contamination?
Joe