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Update for anyone that is interested.
Did the recall procedure myself. Replaced springs, made sure valve clearances were correct. Two intake valves had excess clearance, not the valve that lost the rocker suprisingly. Took the procedure a step further and replaced the head gaskets. Starting it up i found that the spark plug for the cylinder that lost the rocker was fouled. Replaced it and now my car can now can idle without stalling with no codes however it still makes the same but slightly 'better' rattle sound from the engine, that I could not figure out where it is coming from. It sounds like rod knock/spun bearing.
Given all of the issues with other cars having spun bearings after recall work and that my car likely spun a bearing before the valve job, Im thinking that some of it isnt a problem with the warranty work itself but rather a manufacturer defect that is somehow corellated with the affected J02 VINs
Going to pull the bearings soon when I have time and see if my short block is still fixable.
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