Is your car not running like usual? Is it stalling or surging? Rocking or shaking? Getting issues such as these checked out as soon as possible is ideal as it could grow into a bigger issue if you let it go. There could be several reasons why your car is running rough. Here are some common issues to consider:
1. Fuel Issues: Dirty fuel injectors or a clogged fuel filter can affect the flow of fuel to the engine. Also, a weak (aged), a bad fuel pump, and fuel leaks.
2. Ignition Problems: Worn spark plugs, ignition coils, or issues with the ignition system can cause misfires, leading to rough running.
3. Air Intake Issues: A dirty or faulty mass airflow sensor, air filter, or intake manifold can disrupt the air-fuel mixture.
4. Vacuum Leaks: Leaks in the vacuum system can create an imbalance in the air-fuel mixture, leading to performance issues.
5. Engine Timing: Problems with engine timing, such as a worn timing belt or chain, can cause rough running. Cam shaft phasers, variable valve timing solenoids, low oil as well as dirty oil can also affect engine timing causing your car to ride rough.
6. Exhaust System Issues: A clogged catalytic converter or exhaust leaks can impact engine performance.
7. Mechanical Problems: Internal engine issues, such as worn cylinder rings or valve problems, can cause rough running.
8. Sensor Issues: Faulty sensors, such as the oxygen sensor or throttle position sensor, can affect the engine's performance.
If your car is running rough, it's a good idea to have it diagnosed by a qualified mechanic to identify the exact cause and get it repaired.