05 Sorento - Engine Clacking, Rough idle
Every blue moon, after sitting overnight the engine will start and idle very rough and with loud clacking noise (maybe from the heads?). I quickly turn off. Start engine the second time, the clacking and rough engine idle is only half as bad. Then finally smooths out to normal on the third start. I'm too scared to leaving it running for more that a couple seconds to see if it'll smooth out on first start. I've had valves click in cars before but never with a loud violently shaking engine too. Unnerving.
This issue has happened to me only a few times. I hoped the 60K service (timing belt change, etc..) would have cured it but it didn't. I now have 59K so I need to tell the dealer about this. Problem is that it'll proverbially never do this while at the dealership - even if I leave it there overnight - it's simply too random and intermittent to repeat therefore the dealership will probably through their hands up not knowing what to do.
Would the computer have recorded the incident this morning? Engine light didn't come on though.
What problem does this sound like? Any advise is greatly appreciated.