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Q: can the right cylinder head be replaced without removing the engine? on 2002 Mercury Mountaineer

Second time that #1 spark plug blew out
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your answer is not to the question, but appreciate the information. The head already has an insert in that will not come out. Timesert says head must be removed.
Then the repair wasn't performed correctly. Yes the head can be removed, eng. in vehicle! Still think a mechanic should check it out.
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