Good morning,
Do you have the same codes set as this question is addressing? If it is hard starting after fueling, that could be the purge valve for the system that was addressed in one of the answers.
Codes will cover fuel control failures, not mechanical.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
What are your symptoms? I attached the procedure for the purge valve and some pictures for you to view.
Roy
Evaporative Emission Canister Purge Solenoid Valve Replacement
Removal Procedure
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1. Remove the fuel injector sight shield.
2. Disconnect the chassis EVAP pipe (3) quick connect fitting from the EVAP purge solenoid.
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3. Disconnect the EVAP emission canister tube quick connect fitting (2) from the EVAP purge solenoid.
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4. Disconnect the engine wiring harness electrical connector (2) from the evaporative emission (EVAP) purge solenoid.
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5. Remove the EVAP purge solenoid bracket bolt.
6. Remove the EVAP purge solenoid.
Images (Click to make bigger)
Wednesday, November 25th, 2020 AT 8:24 AM