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.
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HOMESERVICE MANUALSHYUNDAI2005SANTA FE GLS, 2.7 D, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (2.7L) (1 OF 2)DTC TROUBLESHOOTING PROCEDURESDTC P0171: SYSTEM TOO LEAN (BANK 1)FUEL SYSTEM INSPECTIONNOTES
2005 Hyundai Santa Fe GLS, 2.7 D, AWD
Fuel System Inspection: Notes
2005 Hyundai Santa Fe GLS, 2.7 D, AWDSECTION Notes
- Check the fuel for excessive water, alcohol, or other contaminants. Replace contaminated fuel as necessary.
- Disconnect the vacuum hose from the fuel pressure regulator and inspect the hose for the presence of fuel. If any fuel is present in the vacuum hose, replace the fuel pressure regulator. Go to next step.
- Install a fuel pressure gauge.
- Start engine and let it idle. With the vacuum hose from the fuel pressure regulator disconnected, inspect fuel pressure.
Specification: 320~340kPa (3.26~3.47 kg/cm2 , 46~49 psi)
- Is fuel pressure within the specification?
YES
- Go to "FUEL INJECTOR INSPECTION " procedure as below
NO
- Repair as necessary refer to inspection note as below and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
RENDER: 1.0x
NO RELATED
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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.