Fuel Injector Wave Forms
Diagnosing a fuel injector circuit with a scope can help you to confirm the health of the drivers and injectors.
Ignition Diagnostics
This part of the cycle is when the mixture of air and fuel ignites and how the flame front spreads in the cylinder.
Fuel Injector Waveform Diagnostics
On the majority of injectors, an electromagnetic coil is energized by a driver in the engine control module.
VIDEO: Diagnostic Strategies For Fuel Injectors
Several different methods can be used to test fuel injectors. This video is sponsored by Standard Motor Products.
Snap-on’s New VANTAGE Legend Scan Tool Has An Updated Interface
A two-channel lab scope, graphing meter and expert information makes it easy for technicians to verify component failures.
Engine Compression Testing
Read this article to find out how to reduce rotating friction and increase running compression.
Check Out The January Issue Of Underhood Service Magazine
Access the interactive and easy-to-view January digital edition.
Check Out The December Issue Of Underhood Service Magazine
Access the interactive and easy-to-view digital edition featuring articles on Fuel-Related Misfires, Secondary Waveforms, Understanding A Data Bus, Diesel Exhaust Fluid, Subaru Stretch Belts, Diesel Oil Filtration, a host of tech tips and more!
Making A Living With A Scope
All technicians know more complex cars with more expensive modules and sensors are coming to shops so parts swapping is not usually an option.
Direct Injection Logic: How The High-Pressure Fuel Pump Solenoid Works
A direct injection fuel pump can’t increase its speed independent of the engine to increase it’s output or pressure, so it has to control the volume of fuel that is compressed. This relationship is what makes direct injection high-pressure fuel pumps a mystery to some technicians and even engineers. But once you understand the relationship between the pump and control solenoid, your diagnostic skills will grow.
