What is a car tune-up?
A tune-up is regular maintenance performed on an automobile, or more generally, any internal combustion engine. Most automobile manufacturers recommend a tune-up be performed at an interval of 30,000 miles (48,000 km) or two years, whichever comes first.
Any tune-up today should start with a battery of performance checks to base line or confirm the engine's overall condition. These should include:
- Battery voltage (very important with all of today's onboard electronics); Charging voltage.
- Engine vacuum (to detect air leaks as well as exhaust restrictions). Operation of the fuel feedback control loop (to confirm that the system goes into closed loop operation when the engine warms up)
- Scan for fault codes (to verify no fault codes are present, or to retrieve any codes that may be present so they can be diagnosed and eliminated). Check exhaust emissions (this should be a must in any area that has an emissions testing program to confirm the vehicle's ability to meet the applicable clean air standards, and to detect gross fuel, ignition or emission problems that require attention)
- Verify idle speed (should be checked even if computer controlled to detect possible ISC motor problems); Idle mixture (older carbureted engines only, but injector dwell can be checked on newer vehicles to confirm proper feedback fuel control)
- Check ignition timing -- if possible (should be checked even if it is not adjustable to detect possible computer or sensor problems). Operation of the EGR valve.
If the tune-up checks find no major faults, the following items should be replaced for preventive maintenance:
- Spark plugs (gapped to the correct specs, of course). Consider long life plugs on applications where plug accessibility is difficult or where longer service life may be beneficial
- Rotor and/or distributor cap (if required)
- Fuel filter; Air filter; PCV valve and breather filter, and other parts on an "as needed" basis (things like spark plug wires, belts, hoses, fluids, etc.)
- Check and adjust (if required on older vehicles) ignition timing, idle speed and idle mixture; O2 sensor(s).
Schedule your tune-up now at Jake's Auto in Youngstown, Arizona!
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Jake’s Auto Repair Inc. is a family owned and operated automotive repair business that is dedicated to perform an excellent and a high quality automotive service. Our technicians and specialists are very well trained and certified to complete a high class service for our customers.
Phone number: (623) 878-5801