Domestic brands have the most American-made content in the U.S. according to a new index released by American Universityâs Kogod School of Business.
A mechanic can clean or replace spark plugs during a tune up. Most new cars have platinum spark plugs which don't need to be replaced as often as traditional spark plugs. Mechanics can replace a dirty air filter during a tune up. A tune up includes checking and topping off an vehicle's fluids. A tune up is a relatively simple job that some people prefer to do themselves.
When performing a tune-up on a car, check the entire secondary ignition system. This includes the ignition coil, rotor, cap, wires and plugs; some mechanics recommend a PCV valve as well. If the tune-up does not solve the problem, air intake is another (although much less common) possibility.