I have one particular spark plug that keeps popping out of place while I am driving, usually if I rev the engine past 3k rpm. Where is the fault in this? Has anybody had a similar problem? Should I just bring it to a mechanic?
Most likely the cylinder head will need to be tapped, or re-threaded... pretty common issue with Fords.
Unless you're very mechanically inclined I would leave it for a mechanic to do.
- Good Luck!
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