after i sat in rominl's car, i found his car was quieter than mines
so he drove my car, he said there were when he step on the gas pedal the engine sound weird and it has the noise only for few secs.
anyone has an idea whats wrong with it?
cuz i am planning to have an oil change next week, so i can let the dealer do everything for me at once

 

1.) Hmmm - wierd sound? Yeah, let me look up in the book of GS engine sounds 'wierd'. Ahhhh, here it is - your flux capacitor is sticking. Try some 3-in-1 oil, and a case of ball bearings - everything's ball bearing these days.



2.) Try to hear it for yourself, so when you take the car in to have a service, you can have a technician ride along with you so you can demonstrate the sound to be looked at.

Look, I hope my sarcasim this cut you too deeply, but when you post a question like "What is this wierd sound......?", it's next to impossible to guess an answer. Try being as specific as you can so we can try to help you.

 

haha dex, you are bad

it's a very mild "thump" / "hump" sound, but not like the sound you hear when you gun your car

 

From the engine bay? Bad motor moount? Air rushing sound? Make sure everyting is tight up there.