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 MANUALSNISSAN-DATSUN2004SENTRA L4-2.5L (QR25DE)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINEENGINE LUBRICATIONOIL PUMP, ENGINESYSTEM SPECIFICATIONS
2004 Nissan-Datsun Sentra L4-2.5L (QR25DE)
System Specifications
2004 Nissan-Datsun Sentra L4-2.5L (QR25DE)SECTION System Specifications
Oil Pump:
Oil Pump
Body to outer rotor radial clearance 0.114 - 0.179 mm (0.0045 - 0.0070 in.)
Inner rotor to outer rotor tip clearance Less than 0.220 mm (0.0087 in.)
Body to inner rotor axial clearance 0.030 - 0.070 mm (0.0012 - 0.0028 in.)
Body to outer rotor axial clearance 0.060 - 0.110 mm (0.0024 - 0.0043 in.)
Inner rotor to brazed portion of housing clearance 0.035 - 0.070 mm (0.0014 - 0.0028 in.)
Regulator Valve Clearance.
(Clearance) = D1 (Valve hole diameter) - D2 (Outer diameter of valve):
Standard clearance:........................0.040 - 0.097 mm (0.0016 - 0.0038 inch)
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.