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.
1991 Geo Tracker LSi, AutomaticFACTORY OEM SERVICE PROCEDURE
Fuel Pressure
- Release fuel pressure. See FUEL PRESSURE RELEASE under FUEL SYSTEM. Disconnect negative battery cable. Attach Fuel Pressure Gauge (J-34730-1) and Adapter (J-37746) at fuel filter inlet bolt. See Fig 1 . Fuel filter is located on right side of the frame, above rear differential.
- Install negative battery cable. Check fuel pressure. See FUEL PUMP PERFORMANCE table. For complete Fuel System Pressure Test Procedure See DIAGNOSTIC CHART A - 7. Release fuel pressure and remove fuel pressure gauge. Install fuel line at fuel filter and tighten to 26 ft. lbs. (35 N.m).
FUEL PUMP PERFORMANCE
| Application | Pressure psi (kg/cm2 ) | ||
|---|---|---|---|
| Tracker | (1) 34-39 (2.4-2.7) | ||
|
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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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