If you are experiencing a loss of power, poor fuel economy and hard starts, there’s a good chance that you may have fuel injector problems that may have come from contaminated fuel.
According to an article in Underhood Service Magazine, when fuel injectors get dirty, the engine may experience a variety of drive-ability and performance problems such as hesitation or stumble when accelerating, loss of power, rough idle, reduced fuel economy and increased emissions.”
Fuel injection problems encompass everything from hard starting, stalling and misfiring to hesitation, surging and no-starts. Dirty injectors, for example, will restrict the amount of fuel that is sprayed into the engine with every pulse of the injector resulting in a leaner-than-normal fuel mixture. This, in turn, can cause lean misfire, hesitation, poor performance and an increase in hydrocarbon (HC) emissions. source: aa1car.com