Which item is NOT important to know before starting the diagnosis ...

[Cooldude101]

Question 1

Which diagnostic step is the most important aspect of diagnosis?
◦ Visual inspection
◦ Verify the problem
◦ Retrieve the trouble codes
◦ Check the service bulletins

Question 2

Which item is NOT important to know before starting the diagnosis of an engine performance problem?
◦ List of previous repairs
◦ Brand of engine oil used
◦ Type of gasoline used
◦ The temperature of the engine when the problem occurs

[jesse.fleming]

Answer 1

Visual inspection

Answer 2

Brand of engine oil used

[Cooldude101]

Thanks for the timely response, appreciate it

[frankwu0507]

Great answer, keep it coming