If the under-hood emissions label states that the ignition timing is 'non-adjustable', what is the correct inspection action?

• A. Pass the vehicle during the Functional Inspection.
• B. Document the label and proceed.
• C. Fail the vehicle during the Functional Inspection.
• D. Request a timing check by a supervisor.

Answer: (C)

Ignition timing information on the under-hood emissions label may indicate whether timing can be adjusted. When the label says non-adjustable, there is no on-site adjustment possible to bring the timing into any acceptable range. In the Functional Inspection, you must be able to verify and, if needed, adjust timing to meet the standard. If you cannot adjust timing and the vehicle cannot be shown to meet emission requirements as-is, the vehicle fails the inspection.

So, the correct action is to fail the vehicle during the Functional Inspection because there’s no allowable adjustment to achieve compliance. Documenting the label and proceeding or asking for a supervisor timing check wouldn’t change the fact that you can’t adjust the timing to verify compliance, and passing would be inappropriate.