- Spark plugs: These are small devices that create an electrical spark to ignite the air-fuel mixture in the engine. Worn or damaged spark plugs can cause misfires, reduced engine performance, and decreased fuel efficiency.
- Spark plug wires: These wires carry the electrical current from the ignition coil to the spark plugs. Faulty spark plug wires can prevent the spark plugs from receiving the necessary electrical charge, resulting in misfires and poor engine performance.
- Air filter: The air filter cleans the air that enters the engine, preventing contaminants and debris from entering the combustion chambers. A clogged or dirty air filter can restrict airflow and reduce engine performance.
- Fuel filter: The fuel filter removes impurities and contaminants from the fuel before it enters the fuel injector. A clogged fuel filter can restrict fuel flow and cause the engine to run lean, leading to reduced performance and potential damage to the engine components.
- PCV valve: The PCV (positive crankcase ventilation) valve regulates the flow of gases and vapors from the crankcase back into the engine intake. A faulty PCV valve can cause engine rough running, increased oil consumption, and oil leaks.
- Oxygen sensor: The oxygen sensor monitors the amount of oxygen in the exhaust gas, providing feedback to the engine control unit (ECU) to adjust the air-fuel mixture accordingly. A faulty oxygen sensor can cause the engine to run rich or lean, affecting performance and fuel efficiency.
It is important to follow the recommended maintenance schedule provided by the vehicle's manufacturer to determine the exact parts and intervals required for a tune-up. Additionally, it is recommended to have a qualified technician perform the tune-up to ensure proper installation and adjustments.
