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.
Hydraulic Lifter Adjustment
With engine warm and idling, back off rocker arm stud adjusting nut until rocker arm starts to clatter against valve stem, then turn nut down until clatter JUST stops. This is "Zero Lash" position. Now turn nut an additional 1/4-turn and wait until engine runs smoothly. Continue to turn nut down in 1/4-turn increments until nut has been turned down 1 full turn from Zero Lash.
NO RELATED
Use the Manual With the Right Hardware
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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.