What happens if a vacuum line breaks?
Since a vacuum leak similarly lets air into the engine, the engine will respond by idling faster. When this happens, the car's computer will try to compensate, typically creating a sporadic or fluctuating idle speed. The engine stalls: In some cases, a vacuum leak can cause your engine to die or stall out. via
How much does it cost to fix vacuum lines?
Depending on the cause and location of the leak it can cost between $150 and $1,000 to repair a leak in your vacuum system. via
How do I find a broken vacuum line? (video)
What do vacuum lines do in a car?
Vacuum hoses have an important job in your car's engine. They help to maintain the proper pressure within the engine, which allows the fuel, the air, and the spark to work in tandem as they're supposed at just the right times. When vacuum hoses go bad, that entire process can fall apart due to pressure loss. via
How do you fix a vacuum? (video)
Why does my car sound like it's leaking air?
If your exhaust system has a leak, you will hear exhaust noise coming from under your vehicle that is loudest when accelerating. The noise means a muffler, pipe, exhaust joint, exhaust manifold or manifold gasket, or the catalytic converter has a crack or hole and is leaking exhaust. via
When should I replace vacuum lines?
How do you unstick a vacuum hose?
Push a broomstick through the hose to force any large clogs out. Take the end of the broomstick and feed it through the hose. Push the stick in slowly so you don't accidentally break or puncture the hose. If there is a large clog in your hose, the broomstick will force it out from the other end. via
How do you unscrew a vacuum hose? (video)
What can a vacuum leak cause?
Vacuum Leaks Cause Engine Performance Issues
Specifically, because there is too much air and not enough fuel in the engine, your engine may stall, stutter, or lag in acceleration when you press down on the accelerator. This is because the engine is fuel-starved, which means it doesn't have enough fuel. via