Wrecked GMC in junkyard

[goatless]

Originally Posted by vin63

Excellent reminder thread to change out that suicide cylinder.

Boy, I'd better increase the priority of this on my to-do list. Just by coincidence, I just read this elsewhere: http://www.classiccarrestorationclub...brakes-or-not/

I did get a chuckle out of this, though:

The booster is typically using vacuum pressure from the engine or a vacuum pump to help you apply pressure to the brake pedal. The reason people like a power booster is that you use less foot pressure on the pedal to get firm braking action. Originally presented as a new car feature “for the ladies,” the addition of a power booster meant you didn’t have to use every last ounce of leg power on the brake pedal to stop on a dime.