Ron Ananian The Car Doctor

In this episode of Ron Ananian, The Car Doctor, Ron discusses a variety of car repair issues, focusing on two main topics: diagnosing a misfire in a 2007 GMC Yukon and addressing oil consumption in a 2013 Buick Verano. 2007 GMC Yukon Misfire: A caller named John described a misfire problem in his vehicle, which was showing random misfires on cylinders 1, 5, and 8. Ron guides John to double-check the diagnostic scan, particularly using Mode 6 data to identify marginal misfires that haven’t yet triggered the check engine light. He advises using basic troubleshooting techniques like moving spark plugs, wires, and coils between cylinders to isolate the problem, while stressing the importance of ruling out faulty parts. Ron emphasizes that misfires typically stem from ignition, fuel, or mechanical issues but can also be caused by computer or sensor malfunctions. He suggests looking at the Mode 6 data to identify subtle misfires before they cause a check engine light. 2013 Buick Verano Oil Consumption Iss