Fuel injection systems operate at higher pressures than carbureted systems. Many design types of electronic fuel injection vary widely in their operating pressures. Throttle body type injection (with injectors mounted above the throttle plates) operate in the range from 9 to 15 pounds per square inch. Port type injection systems (with injectors mounted in the intake manifold) operate in the range from 30 to 60 pounds per square inch. Some newer direct injection systems (with injectors mounted directly into the cylinder) operate at pressures as high as 3000 pounds per square inch. This extremely high pressure is needed because the fuel is injected into a high-pressure area
Fuel Injection Systems
About the Author: Gary Thomas
Gary has over forty years of mechanical experience. His career began in 1977 as an apprentice at a Chevrolet/Buick dealership in Rhode Island. By 1980, he had obtained a Federal Aviation Administration Airframe and Powerplant License and began work as an aircraft mechanic for Eastern Airlines at JFK Airport in New York. In 1985, he left Eastern Airlines to further his education in Christian Studies while maintaining corporate aircrafts for The Way International Christian Ministries in Ohio and earned an Associates Degree in Theology. In 1989, he moved to Kentucky and returned to the automotive maintenance industry. Since that time, accrued experience and continued education has resulted in an ASE Master Automotive Certification with advanced level certifications in engine performance, hybrid technology and an Associates in Applied Science in Automotive Technology Degree. He is presently employed at Auto Alternative in Nicholasville, Kentucky.