The Trainer 145: Solving the mystery of the intermittent misfire

Join Motor Age in this episode of “The Trainer” with Technical Editor Brandon Steckler as he demonstrates how to use the Autel MS919 scan tool to not only identify an intermittent misfire but also determine what the cause of the misfire is. 

In this video, Brandon describes the combustion process of a spark ignition internal combustion engine. He explains how an intermittent misfire affects the exhaust gas and how one appears in the eyes of a heated oxygen sensor and/or a wide-band air-fuel ratio sensor.   

Through the monitoring of a few basic OBDII global PIDs, Brandon quickly and easily determines the cause of the misfire. The analysis can be conducted right from the driver’s seat without ever opening the hood and can easily point to an ignition fault or an injector fault. It’s all about “chemistry” of the catalytic converter. 

Tune in and find out how the Autel MS919 can use this technique to take your diagnostics to the next level. 

Join Motor Age in this episode of “The Trainer” with Technical Editor Brandon Steckler as he demonstrates how to use the Autel MS919 scan tool to not only identify an intermittent misfire but also determine what the cause of the misfire is.  In this video, Brandon describes the combustion process of a spark ignition internal combustion engine. He explains how an intermittent misfire affects the exhaust gas and how one appears in the eyes of a heated oxygen sensor and/or a wide-band air-fuel ratio sensor.    Through the monitoring of a few basic OBDII global PIDs, Brandon quickly and easily determines the cause of the misfire. The analysis can be conducted right from the driver’s seat without ever opening the hood and can easily point to an ignition fault or an injector fault. It’s all about “chemistry” of the catalytic converter.  Tune in and find out how the Autel MS919 can use this technique to take your diagnostics to the next level.  --- There's lots more from Motor Age! Check out our video library at www.youtube.com/MotorAgeMagazine?sub_confirmation=1 Receive your FREE SUBSCRIPTION to Motor Age here: https://endeavor.dragonforms.com/loading.do?omedasite=MAnew Each issue is packed with in-depth technical articles from experts, brief tech tips and repair strategies, TSBs, and much, much more! DID YOU KNOW? Motor Age offers a library of ASE Certification training materials. Motor Age Training's books, practice tests and video resources is edited by ASE Master Technicians with years of experience in repair processes. Each product is designed to help you prepare for and pass your ASE certification exam – GUARANTEED. CLICK HERE TO FIND OUT MORE: https://motoragetraining.com/ FOLLOW US ON FACEBOOK: https://www.facebook.com/MotorAgeMagazine/ VISIT OUR WEBSITE FOR EVERYTHING AUTOMOTIVE http://www.vehicleservicepros.com @@@@@@@@@@@@@@@@@ Due to factors beyond the control of Endeavor Business Media, it cannot guarantee against unauthorized modifications of this information or improper use of this information. Endeavor Business Media assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Endeavor Business Media recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of Endeavor Business Media, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Endeavor Business Media. The tool and/or equipment featured in this video was supplied by the manufacturer and may or may not be retained by the reviewer at no cost.