Troubleshooting should include following all safety procedures, guidelines, and manufacturer specifications for engine assembly

wearing required PPE
using appropriate tools and equipment
systematically diagnosing and correcting problems that prevent an engine from operating effectively.

Process/Skill Questions:

What common problems would require troubleshooting an engine?
What does a compression test reveal about the engine’s valves, valve seats, and piston rings, and why is this important?
How do you safely check for spark?
How do you determine whether the engine is getting fuel?