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.

1994 Kia Sephia LS, AutomaticFACTORY OEM SERVICE PROCEDURE

Fuel Pump

FUEL PRESSURE SPECIFICATIONS

Application

psi (kg/cm² )

Maximum Pressure ⁽¹⁾

64-85 (4.5-6.0)

Regulated Pressure ⁽²⁾

Vacuum Hose To Pressure Regulator Connected

30-37 (2.1-2.6)

Vacuum Hose To Pressure Regulator Disconnected

38-46 (2.7-3.2)

⁽¹⁾	With pressure gauge connected to fuel inlet hose and fuel return hose plugged. Ignition on and fuel pump terminal (Blue/Green wire) of Data Link Connector (DLC) grounded.

⁽²⁾	With engine speed at idle and pressure gauge connected between fuel inlet hose and fuel filter.

Factory Service Tools

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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.

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