Automotive emissions and failure analysis expert witness with more than 40 years of consulting experience in automotive emissions, automotive technology, testing, collision, repair, and failure analysis. He has more than 30 years of expert witness experience, including deposition and court testimony, with casework involving mechanic negligence or malpractice, faulty design allegations, automotive testing, collision and repair issues, vehicle tampering, and asphyxiation-related vehicle matters. His expertise includes certified training in emissions diagnostic testing and repair, real-world reliability analysis and testing, automotive electrical and electronic troubleshooting, emissions repair, technical writing, and professional technical training.

His automotive background includes hands-on technician work, repair facility ownership, licensed emissions repair facility operations, diagnostic strategy development, and technical training for emissions and OBD-II systems. He has taught technical courses involving emissions diagnostics, automotive computers, lab scope use, fuel pump testing, ignition systems, OBD-II monitors and Mode 6, and Asian imports. His technical work also includes diagnostic analysis involving vehicle electrical systems, modules, fuel systems, air/fuel sensors, EVAP systems, returnless fuel systems, exhaust gas analysis, hybrid vehicle service, brake and metal line repair, oil consumption issues, PCV systems, TPMS, battery testing, wheel bearings, valve adjustment, NOX failures, MAF sensor diagnosis, quick-disconnect fittings, suspension bushings, and SUV ride deterioration.

He holds a Bachelor of Arts degree and has served as an instructor or tutor in mathematics, physics, and chemistry. He is an ASE-certified technician with L-1 Advanced Level Specialist credentials, an Ohio E-Check Licensed Repair Technician, and an approved trainer for Enhanced I/M Programs. He has also completed several hundred hours of continuing education in automotive service specialty areas, including a 128-hour Emissions Diagnostics Graduate Education course.

His authority in automotive diagnostics is supported by three stand-alone automotive books, nationally published articles for the automotive aftermarket and service industry, technical consultant work, technical editor work, and contributing editor experience. His technical writing addresses emissions diagnostics, OBD-II systems, diagnostic logic, electrical troubleshooting, automotive computer systems, shop practices, vehicle service intervals, fuel economy, repair verification, and forensic diagnostic skills. His background supports expert analysis in matters involving automotive emissions, emissions diagnostic repair, automotive failure analysis, electrical and electronic troubleshooting, automotive repair practices, diagnostic methods, repair verification, collision-related vehicle issues, and testing methodology.