WHY SHOULD YOU GIVE YOUR VEHICLE A TUNE-UP?
There's no absolute definition of what exactly a tune-up should include, but most would agree that it involves replacing the spark plugs and other related parts to maintain or increase engine performance.
Tune-ups should be scheduled annually or even sooner if you notice any of the following:
- Your gas mileage is decreasing.
- You experience a loss of power or torque.
- Your engine sounds like it's running rough or stalls out at a stop.
- You hear knocking or pinging sounds when accelerating or after the ignition is turned off.
- Your check engine light remains on after your initial start.
If the tune-up checks find no major faults, the following items should be replaced for preventive maintenance:
- Spark plugs
- Fuel filter
- Air filter
- PCV valve
Other parts should be replaced on an "as needed" basis (things like spark plug wires, belts, hoses, fluids, etc.).