2005-2006 (LX) Chrysler 300/ Magnum/ Charger/ Pacifica Multiple Cylinder Misfire Or Rough Idle Repair Manual

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REPAIR PROCEDURE: VALVE ROTATION: 1. Relieve the fuel pressure. Refer to the detailed service information available in TechCONNECTunder: Service Info>14-Fuel System>Fuel Delivery >Standard Procedure>Fuel System Pressure Release Procedure. 2. Remove upper intake manifold. Refer to the detailed service information available in TechCONNECTunder: Service Info >9-Engine>Manifolds>Intake Manifold> Removal. 3. Remove cylinder head cover(s). Refer to the detailed service information available in TechCONNECTunder: Service Info >9-Engine>Cylinder Head>Cylinder Head Cover(s) >Removal. 4. Remove rocker arm and shaft assembly. Refer to the detailed service information available in TechCONNECT under: Service Info >9-Engine>Cylinder Head> Rocker Arm/Adjuster Assembly >Removal). 5. Clean and mark the tip of each exhaust valve stem at the 12 O’clock position witha paint marker. The paint mark will be used later to assist with determining the amount of valve rotation. 6. Remove the sparkplugs. 7. Rotate the crankshaft clockwise, until the number 1 piston is at Top Dead Center (TDC) on the compression stroke. 8. Install the compression tester sparkplug adapter in cylinder#1 sparkplug hole. With air hose attached to sparkplug adapter, apply 620.5 to 689 kPa (90 to 100 psi) air pressure. This is to hold valves into place while servicing components. 9. Using Tool MD 998772A (1) with adapter 6527 (4) or equivalent, slightly compress the exhaust valve spring to release tension against the valve and valve spring retainer ( Fig. 1 ). 10. Remove the valve spring retainer locks and discard the locks. NOTE: It is important that the valve rotation section of this repair procedure be performed.