The Automotive Fuel Injection Cleaning Machine manufacturers typically use Tuthill Miniature Magnetically Coupled External Gear Pumps. The Tuthill pumps temporarily replace the vehicle fuel pump and supply the gasoline or diesel fuel mixed with cleaning agents. The pumps are driven by a 12 volt DC motor powered by the vehicle engine battery making the machines portable. Polyphenylene sulfide engineered plastic and 316 stainless steel construction is chemically compatible with the fuels and additives. The Tuthill Miniature Magnetically Coupled External Gear Pumps are ideal for Fuel Injection Cleaning Machines due to their leak free design, compact size, long life, smooth flow, reversing capability, high efficiency, and high-pressure capability.