This document is a seminar report submitted by Puneet Kumar Singh to fulfill requirements for a Bachelor of Technology degree in Mechanical Engineering. The report is about electronic fuel injection systems and was conducted under the supervision of Prof. P.C. Tripathi and Mr. Akhilesh Kumar Rathore. Certificates are included from the guides and department head to verify the work is Puneet's own and has not been submitted for another degree. Puneet also acknowledges and thanks the many individuals who provided assistance and support in completing the report.