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 MANUALSFORD1990RANGER 4WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINEINTAKE MANIFOLDTIGHTENING SPECIFICATIONS
1990 Ford Ranger 4WD L4-140 2.3L SOHC
Tightening Specifications
1990 Ford Ranger 4WD L4-140 2.3L SOHCSECTION Tightening Specifications
| Lower Intake Manifold to Cylinder Head | Step 1 | 7.9 |
| Step 2 | 19-28 | |
| Fuel Supply Manifold to Lower Intake Manifold | 20-30 | |
| Upper Plenum to Lower Intake Manifold | 20-30 | |
| Throttle Body to Upper Plenum | 20-30 |
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.