A tune up is a regularly scheduled opportunity, usually every 60.000 – 90.000 mi, to do all of the preventative maintenance that needs to be done. Ensuring that your car gets a tune up regularly will help maintain the performance of your car and extend its life.
A tune up generally includes replacement of several parts on your car. These parts may seem superficial, but failing to replace them regularly can cause decreased performance in your car, and may even lead to other problems. For example, an air filter should be replaced at least once a year; failing to replace it when it’s dirty will cause your engine to get less and less of the air it needs to run properly. If the problem is left unattended, the air-fuel mixture will continue to run richer and richer —- meaning that there will be too much fuel and not enough air in the mixture —- and eventually cause other parts to fail.
As you can see, a regular tune up is important to your car’s performance. A tune up should involve replacing the air filter, replacing spark plugs, distributor cap, rotor, spark plug wires, fuel filter, PCV valve, and cabin filter