Intermediate to Advanced
Teach a repeatable drivability process using scan data, fuel trims, symptom isolation, and clean test plans.
Start with the complaint, the conditions, and the pattern instead of the code alone.
Set the test before the rabbit holes start.
Sort symptoms into useful diagnostic lanes.
Choose the next three smart checks instead of twenty random ones.
Use PIDs and mode data to narrow the field fast.
Read mixture clues without overcomplicating them.
Separate mechanical, ignition, and fuel patterns quickly.
Work through an intake-vs-fuel-delivery problem step by step.
Finish with evidence, not a story that merely sounds good.
Pick the confirming test that closes the case.
Translate technical proof into a recommendation advisors and owners can trust.
See the full process under messy real-world conditions.