Guide step
Split hot restart from cold start
If long crank is worst after refueling or hot soak, a leaking purge valve moves much higher on the list than a random sensor guess.
Guide page
Long Crank Diagnostic Order Before Replacing Sensors
A practical way to separate cam/crank sync, purge flooding, and fuel-delivery delay when the engine eventually starts but takes too long to fire.
Guide step
Watch sync data while cranking
RPM signal, cam sync, and correlation status help separate crank sensor trouble from timing drift or a dead cam signal.
Guide step
Do not ignore timing noise
A long crank plus startup rattle deserves timing-system attention before you keep swapping electrical parts.