Dixie Automotive Diagnostics

Chevy Sonic with a camshaft position sensor code. Two separate cam sensors were installed. A lab scope made quick work of this one. I noticed the signal was missing something. One of the teeth on the exhaust camshaft was broken off. This one will need a camshaft. Just another reason why every shop needs a lab scope.

Pretty interesting diagnostic. 2013 Kia Optima running rough and very rich fuel trim. I managed to capture this waveform to verify a faulty fuel injector. The yellow trace is fuel rail pressure and the green trace is my sync from the #2 fuel injector. You can see how much further the pressure in the rail dropped when the #2 fuel injector fired. This indicates that it is over fueling. The injector was replaced and the vehicle was fixed.