Its been a week. Car driven a few hundred km. The area previously cleaned is dry.
I purchased a VW specific scanner and got P0304 - Cylinder 4 misfire and P190D - Coolant pump for charge pressure cooler mechanical malfunction. Codes cleared and car driven hard. Re-scanned and no codes. Car drives totally fine. Few questions
- how often do the factory spark plugs need to be changed?
- are the coil packs prone to failure on these cars?
- is the coolant pump on its way out or just a glitch

thanks