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.
A simple maintenance type tune-up (a new set of plugs) may make an engine easier to start, improve fuel economy, lower emissions, restore lost pep and power, and so on provided engine performance deteriorated because of worn or fouled spark plugs.