If you have noticed that your engine keeps stalling or your gas mileage has decreased, it could be time to have your fuel system checked. The fuel system is one of the hardest worked areas of your engine. It can become clogged, dirty and inefficient if not maintained correctly and on a regular basis.
The car servicing manual recommends the use of a fuel system cleaner once every 15,000 to 18,000 miles in order to keep the fuel system operating at peak performance. When you own a car, you should arrange for regular fuel system maintenance.