Did you ever have a car that took 10 seconds or more to start? You know the annoying grinding sound, but did you know those cars waste enough gasoline to go a mile or two in the direction of your destination? Leaky valves, poorly-timed spark plugs, clogged air filters and slipping belts rob you of miles per gallon. Tune-ups have become much more expensive over the years, and people tend to shy away from them. To do so is "penny-wise and pound-foolish."