Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2020 Kia Optima EX PremiumFACTORY OEM SERVICE PROCEDURE
Repair Procedures: Removal
WARNING:
When removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, injury may be caused by leakage of high pressure fuel. For this reason, do not attempt any repairing immediately after engine stops.
- Release the residual pressure in fuel line.
(Refer to Fuel Delivery System - "RELEASE RESIDUAL PRESSURE IN FUEL LINE ")
- Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
- Remove the battery.
(Refer to Engine Electrical System - "BATTERY ")
- Remove the air cleaner and the air intake hose.
(Refer to Engine Mechanical System - "AIR CLEANER ")
- Remove the engine wiring.
- Disconnect the OCV connector (A) and EWGA extension connector (B).
- Remove the engine wiring mounting bolts, and then remove the engine wiring harness (A).
- Disconnect the OCV connector (A) and EWGA extension connector (B).
- Disconnect the fuel feed tube quick-connector (A).
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.