Question

When a customer states that black exhaust smoke is coming from the exhaust: Technician A says faulty oil rings may be the cause. Technician B says a faulty head gasket may be the cause. Who is correct?

Answer 1

It is possible that either technician could be correct, as both faulty oil rings and a faulty head gasket can cause black exhaust smoke to come from the exhaust. However, it is also possible that there could be other causes for the black smoke. In order to accurately diagnose the issue, a mechanic would need to perform a thorough inspection of the vehicle and possibly run diagnostic tests. It is recommended to have the vehicle inspected by a qualified mechanic to determine the cause of the black smoke and to get the appropriate repair.

Step-by-step explanation: