On friday I felt my Jetta 2.5 5 cylinder start to lose a little power and the check engine light came on. When I went to Auto Zone to do a scan the said that cylinder 4 misfired so I got 5 new spark plugs to see if that fixes the problem. On Sunday I got around to changing the plugs. I took out the first 4 with no problem but the last plug (farthest right) had water in the ignition coil well. I ended up trying to dry out the well and the replaced my plugs. I drove it to work today and and the first have of the drive it ran fine nd then about half way to work I felt my engine misfire. Dose anyone know how water got into the well?