Description:
The vacuum system consists of a network of hoses, lines and valves that connect vacuum-operated devices to the engine.
Purpose:
Despite
the growing use of electronics on today’s cars,
automakers continue to use a power source created by the
“breathing” of the engine—vacuum. It can be used to operate the
power brake booster, cruise control or even as a signal of
engine load.
Maintenance Tips/Suggestions: Vacuum hoses and lines require regular
inspection to make sure they’re in good condition and secure.
Because of the extreme heat under the hood in your vehicle, it can
cause hoses to break down, sometimes causing leaks or they may even
collapse, preventing vacuum from
getting to its intended part.
Also, fuel vapors present in your vehicle’s fuel and air intake
system can attack hoses making them weak. Symptoms of vacuum problems
may be high idle speed, bucking and surging, overall poor engine
performance, excessive fuel consumption, a “hard” brake
pedal, or a hissing sound from underneath the hood. Always
replace any bad lines or hoses.
