Items to Check and/or Replace:
* Spark Plugs: These are crucial. Check the gap (consult your owner's manual for the correct gap) and replace them if they're worn, fouled, or if they've reached their recommended replacement interval (typically every 30,000-100,000 miles, depending on the plug type and driving conditions). Use the correct type and heat range spark plug specified in your owner's manual.
* Wires (Spark Plug Wires/Ignition Cables): Inspect for cracks, fraying, or damage. Replace if necessary. Worn wires can misfire and reduce performance.
* Air Filter: Replace this regularly (every 12,000-30,000 miles, or as needed). A clogged air filter restricts airflow and reduces engine efficiency.
* PCV Valve (Positive Crankcase Ventilation): Inspect and replace if necessary. A faulty PCV valve can cause oil leaks and reduce engine performance.
* Fuel Filter: Replace every 30,000-60,000 miles, or as recommended by your owner's manual. A clogged fuel filter restricts fuel flow.
* Throttle Body Cleaning: Clean the throttle body using throttle body cleaner. A dirty throttle body can cause poor idle and drivability issues.
* Mass Airflow Sensor (MAF) Sensor: Inspect for cleanliness. A dirty MAF sensor will affect the fuel/air mixture. Do NOT use any solvents or cleaners on the sensor element. Clean carefully using compressed air ONLY.
* Battery Terminals: Clean battery terminals to ensure a good electrical connection.
Important Considerations:
* Owner's Manual: Always consult your owner's manual for the specific recommendations for your vehicle. It will list recommended replacement intervals and specifications.
* Professional Mechanic: If you're not comfortable performing these tasks yourself, it's best to take your S10 to a qualified mechanic.
Remember, a "tune-up" is a broad term. What constitutes a complete tune-up varies depending on the vehicle's age, mileage, and condition. Focus on addressing any noticeable performance issues first (rough idling, hesitation, loss of power).
