It may be time for a "tune-up" if you notice one or more of the conditions below when starting or driving your vehicle:

??a decrease in gas mileage
?? a noticeable loss in power
??your engine running "rough" or stalling when at a stop
??engine "knocking" when accelerating or running-on after the ignition is turned off
??your "Check Engine" or "Service Engine" light remaining on after initial start-up

A standard tune-up, or spark plug replacement, done at the suggested maintenance interval will make an engine easier to start, improve fuel economy, lower emissions and restore lost power. Another (often overlooked) service designed to help your vehicle's engine running properly is the cleaning of fuel injectors and the fuel intake system. When dirt and deposits collect on fuel injectors, the amount of fuel delivered to the engine is restricted, leading to deterioration in performance and responsiveness.