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 DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER HEAD ASSEMBLYSPECIFICATIONSTIGHTENING SPECIFICATIONS
1990 Ford Ranger 4WD L4-140 2.3L SOHC
Tightening Specifications
1990 Ford Ranger 4WD L4-140 2.3L SOHCSECTION Tightening Specifications
Revised Cylinder Head Torque Specifications
This Updated Revised Torque Specification "Torque Plus Angle" Procedure can be found in TSB# 94-6-4, dated March 23, 1994.
This Updated Revised Torque Specification "Torque Plus Angle" Procedure can be found in TSB# 94-6-4, dated March 23, 1994.
| New Design Cylinder Head Torque Specification "Torque Plus Angle" Procedure Note: The New Design Cylinder Head Gasket and Bolts are different from the production and previously designed parts. Because of this difference, the New Head Bolts are the ONLY bolts that can be used with the New Head Gasket. | Step 1 Note: Tighten Cylinder Head Bolts in sequence. | 70 Newton Meter (Nm) |
| Step 2 Note: Retighten Cylinder Head Bolts in sequence. | 70 Newton Meter (Nm) | |
| Step 3 Note: Tighten Cylinder Head Bolts in sequence. | 90-100 Degrees |
RENDER: 1.0x
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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.