ABYC Diesel Practice Exam

If a customer states that their boat has decreased performance, which of these should be considered first?

1. Compression test

2. Visual inspection

3. Oil change

4. Computer diagnostics

The correct answer is: Visual inspection

When a customer reports decreased performance in their boat, conducting a visual inspection should be the first step. A visual inspection allows the technician to quickly identify any obvious issues that could affect performance, such as leaks, damaged parts, or signs of wear and tear. This approach is essential because many performance problems can be traced back to visible issues, such as clogged fuel filters, loose connections, or even fouled props. By addressing the visible aspects first, the technician can potentially pinpoint the problem more efficiently before moving on to more complex tests or diagnostics. After completing the visual inspection, if no clear issues are found, a compression test or computer diagnostics might be necessary to further investigate the performance drop. Choosing to perform an oil change or other mechanical tasks without first examining the visible condition of the engine may overlook critical factors that are directly impacting performance. Therefore, starting with a visual inspection ensures a systematic approach to troubleshooting, which is vital for efficient problem resolution.