This has probarbly never happened to anyone else. But I had a tapping noise on my car coming from the passenger side area. My tech said it was lifter tap. One evening I opened the hood and noticed the #1 spark plug wire shaking, the noise was coming from there. Yup the spark plug was loose. I tightened the spark plug and the tapping/ticking is gone for good!!! Probarbly not your case but it might be worth checking considering that your plugs and wires were recently changed.

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