Part 2 of 2. Actual examples of scan tool data are shown so you can test your comprehension of fuel trim data interpretation from Part 1 and make diagnoses or determine reasonable direction towards a repair without even popping the hood!

Part 1 is Here:    • Secret of Engine Problem Diagnosis F...  

For more advanced Fuel Trim info see my video on adaptive fuel learn here:    • Understanding+Diagnosis: Adaptive Fue...