Help! Can anyone know the problem with this start up? New battery, air intake/throttle bodies are clean, starter and alternator are good.

 

You may want to upload to youtube. I know I'm not about to download some strange file.

You check spark plugs?

 

any check engine lights? any recent work done? symptoms before it wouldnt fire?

 

No check engine lights not recent work done. It straight how it only happen when it's at least 1 hour cool down

 

I didn't check the spark plugs. It only have 38000 miles on it, I would thought spark plug won't go bad? Cold start is normal, only happen if I shut off the engine and let it sit for 1 hour then when I start the car this will happen.

 

I couldn't see what you're trying to show. It looked a normal start to me.

 

This is the normal one. Can you see the rpm shot straight up instead of half way then go up? The sound is much stronger than the other one.

 

I see the difference in the videos but don't see a problem. The engine doesn't stop in the exact same location each time. Both of these look like they're hot starts given the temperature gauge position. Heat soak, vapors, and other factors can affect start up.

Also, please use a more meaningful title next time. I often skip titles such as help or question or other vague terms.