This is a general outline; consult a factory service manual for your specific 2000 Dodge Neon engine (likely a 2.0L or a 1.8L) for precise specifications and procedures. The service manual will provide crucial details such as:
* Correct valve lash specifications (clearance): These are measured in thousandths of an inch (or millimeters). Getting this wrong is the most common mistake and will cause damage.
* Valve adjustment procedure: The exact steps, including the order of cylinder firing, may vary slightly between engine types.
* Torque specifications: For bolts and nuts during the process.
General Steps (This is NOT a substitute for a service manual):
1. Safety First: Disconnect the negative battery cable. Allow the engine to cool completely. Work in a well-ventilated area.
2. Access: You'll need to remove parts to access the valve adjustment mechanism. This usually involves removing the valve cover, timing belt cover, and possibly other components depending on your engine. The service manual will detail this.
3. Timing: Accurate timing is CRITICAL. You'll need to set the engine to Top Dead Center (TDC) on the compression stroke for each cylinder before adjusting its valves. This often requires using the timing marks on the crankshaft pulley and camshaft sprockets. Getting this wrong is very damaging.
4. Measurement: Use a feeler gauge to measure the valve lash (clearance) between the rocker arm and valve stem. Compare the measurement to the specifications in your service manual.
5. Adjustment: Most Neons use shims to adjust valve lash. This means you'll need to remove the existing shim, measure its thickness, calculate the necessary new shim thickness based on the required clearance and the existing shim thickness, and install the correct shim.
6. Reassembly: Carefully reassemble all components, ensuring everything is tightened to the correct torque specifications from your service manual.
7. Verification: After reassembly, double-check your valve adjustments and timing.
Tools You Will Need (at minimum):
* Factory Service Manual: Absolutely essential.
* Socket set: Various sizes.
* Wrenches: Various sizes.
* Feeler gauge: Accurate measurement is crucial.
* Valve adjustment shims (if required): The correct sizes.
* Torque wrench: Essential for accurate tightening.
* Jack stands: To safely support the vehicle.
Again, I strongly recommend seeking professional help from a qualified mechanic. Valve adjustments are not a beginner's job, and mistakes can cause significant engine damage. The cost of a professional adjustment is far less than the cost of repairing a damaged engine.
