I have a 1985 Mazda 626. Can you positivily say that a brake power booster is good by simply looking at the vacuum line and lever? How would you check a power booster that has no brake fluid in the brake system because of broken line? Can you tell if a diaphram is busted in a power booster by inspecting the outside of the booster only? To properly check a power booster should the car be running? If a power booster is not working correctly will the car stop as effeciently as it would if it were working properly? How much percentage wise does a booster assist in the braking of a car?
Optional Information:
1987 Mazda 626
Already Tried:
nothing. Just aked questions./p>