Factory Power Brake Fun (not really)
I noticed awhile ago when I pressed the power brake pedal on the '65 Formula S that the idle speed would change. Then I noticed the idle speed was not changing when pressing on the brake, but the idle was then rough and the power brake assist was no longer available. Took an extreme effort compared to before to bring the vehicle to a complete stop.
I used my home-made smoke machine today to see if I could find the exact source of the problem. However, no smoke could be seen emanating from either the booster cannister or the fender mounted reserve tank.
Then I decided to test the line using a vacuum gauge/tester (which is what I should have done in the first place). Using that test device on the hose that normally connects to the intake manifold resulted in a complete inability to provide a vacuum in the system (needle on gauge while pumping pretty much stayed on/near 0).
Later, I plan on plugging the hose at the intake manifold (to disconnect the booster completely) and drive around the block to verify the brake pedal effort is exactly the same with the hose either on or off.
I noticed awhile ago when I pressed the power brake pedal on the '65 Formula S that the idle speed would change. Then I noticed the idle speed was not changing when pressing on the brake, but the idle was then rough and the power brake assist was no longer available. Took an extreme effort compared to before to bring the vehicle to a complete stop.
I used my home-made smoke machine today to see if I could find the exact source of the problem. However, no smoke could be seen emanating from either the booster cannister or the fender mounted reserve tank.
Then I decided to test the line using a vacuum gauge/tester (which is what I should have done in the first place). Using that test device on the hose that normally connects to the intake manifold resulted in a complete inability to provide a vacuum in the system (needle on gauge while pumping pretty much stayed on/near 0).
Later, I plan on plugging the hose at the intake manifold (to disconnect the booster completely) and drive around the block to verify the brake pedal effort is exactly the same with the hose either on or off.
