What is your question?
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What is your question?
When I start the car it sounds like there's nothing wrong with it then as the car runs for a little while and when your driving it starts to make like a knocking sound that gets louder the longer the cars on. This happens every time the cars on long enough to get hot
What makes this problem better or worse?
Worse when the cars been on for a while
How long has your 2006 Hyundai Sonata had this problem?
Since I bought the car
It's repetitive like every time the cars on it does it but the way it does when you start it you would swear nothing it wrong with it but as the car starts to warm up is when the knocking starts and it gets louder and louder as the car is on and/or being driven
It sounds like your noise concern is coming possibly from the powertrain, engine area. A physical inspection is necessary -- someone with knowledge can give you guidance on how to proceed. And on how severe the concern is. Good luck!