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 MANUALSLINCOLN2006ZEPHYRREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICALENGINE SYSTEM-GENERAL INFORMATIONGENERAL PROCEDURESVALVE SPRING SQUARENESS
2006 Lincoln Zephyr
Valve Spring Squareness
2006 Lincoln ZephyrSECTION Valve Spring Squareness
- Measure the out-of-square on each valve spring.
- Turn the valve spring and observe the space between the top of the valve spring and the square. Install a new valve spring if out of square.
- For additional information, refer to the General Specification chart in the appropriate engine article.
- If out of specification, install new components as necessary. Refer to the appropriate article for the procedure.
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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.