The function of the vehicle fuel system is to store & supply fuel to the engine.The engine intake system is where the fuel is mixed with air atomized and vaporized.Then it can be compressed in the engine cylinder and ignited to produce energy or power.Although fuel system vary from engine to engine ,all systems are the same in that they must supply fuel to the combustion chamber and control the amount of fuel supplied in relation to the amount of air.

The basic systems of any type of vehicle fuel system that is showing signs of wear or deterioration are

• Difficult engine starting
• Slow acceleration
• stalling while driving
• Engine check light illuminated
• Engine rough idling
• Decreased fuel economy etc