- Check Engine light often signals a faulty vacuum hose.
- Engine runs rough, idles poorly, or loses power due to hose issues.
- Severe hose damage can prevent starting or fully operating the engine.
The most common signs include the Check Engine lighting up on the dashboard, incorrect engine operation, the feeling that the engine is losing power or even the inability to start the engine.
One of the side effects of using a combustion engine is that the pressure inside the components builds up over time.
In order to allow this pressure to decrease and for the initiation of the combustion and evacuation phenomenon to take place correctly, it is necessary to use vacuum hoses. All vehicles are equipped with such hoses that are connected at different levels of the engine.
Like any other mechanical component, these elements of a car’s structure can change over time due to the deposition of residues, due to high temperature and other favorable factors that can cause the component parts to wear out or be destroyed.
When such a hose breaks, is disconnected or perforated, it can cause many mechanical problems, which can range from engine failures to total inability to operate.
Most manufacturers, but also the specialized personnel within the car services recommend the verification of these components during each overhaul and their visual examination when the oil is changed.
There are certain signs that may be associated with a broken, disconnected or perforated / damaged exhaust hose. If you notice any signs, it is advisable to go to a car service, where specialized personnel can check the technical condition of your car.
The Check Engine light comes on
Today’s modern engines are monitored via the ECU. This system has numerous sensors connected to individual components internally and externally.
If the hose is faulty or perforated, the sensor will detect an increase or decrease in pressure and cause the Check Engine warning light to come on.
It would be best to check the condition of your car after you have reached your destination.

It is advisable to pay attention to this warning light and to check the technical condition of the car within a specialized service.
The engine is not working properly
When a hose no longer works properly or is punctured, a side effect is that the engine will malfunction leading to engine failures or irregular speed.
Usually the Check Engine light will come on when this problem occurs, but there may be a problem with the sensor that causes this error. For this reason,it is better for the owner of the car to inspect the hoses for issues.
If you notice the engine has problems at idle or when accelerating you should check with a professional.
The engine loses power or does not start
When the hose damane is significant, it may prevent the engine from fully operating. Inside the combustion engines there is a sensor that monitors the pressure inside.
If the pressure values are too high, it is possible to cause the displacement of a gasket and therefore the destruction of the cylinder components, and in some cases even the appearance of the detonation phenomenon inside the engine.
This warning system is very important to ensure protection against a possible accident, but also against possible serious engine failures. If you notice that the engine loses power while driving , it is advisable to stop the car and restart it.
If you notice that the engine does not start, it is advisable to go to a service center. If it is necessary to replace the hoses, it is good to adjust the ignition and adjust the fuel supply system in case of problems.
The engine fails
Failures are usually determined by the existence of a malfunction in the electronic synchronization system that indicates the ignition of each spark plug at a certain time.
Failures can also be caused by an increase in combustion chamber pressure, which is regulated by vacuum hoses and sensors.
If you notice that the engine is failing, it is advisable to go to an authorized service to perform a test drive and check if there is a problem. If the engine fails and the problem remains unresolved, it can lead to major engine failures.
A vacuum hose is a fairly inexpensive component, but essential for the proper operation of the car. Pay attention to any signs that your car is giving you that could indicate a problem.
Photo source: wikihow.com, digitaltrends.com, autopartspro.co.uk