: Engine sounds like go cart at hard acceleration



UNNREALL
04-19-11, 05:06 PM
I have a 2007 Cadillac CTS 3.6L with 66,000 miles. Car has ran great since first purchasing at 47k miles. I have kept up with all oil changes roughly 3-4k miles. My most recent was at 62k miles. My engine has been making a strange noise. Best to be described as a go cart motor taking off which occured for about 3 days which brought me to check my oil and it was low. Not dry but low. I figured my car would not burn that much oil in that little time. No time for an oil change so I added 3 quarts which came up good on the dipstick. The noise went away but only now occurs when I surpass 3500 rpm during acceleration and it sounds like a go cart. I don't know whether to call it a flutter sound but only happens at higher rpms while acceleration harder than usual. I also noticed now at start up it makes 3 clicks, or knocks or clanks then stops. I did not extend my warranty since I didn't have the money at the time. Any ideas here? Any suggestions would be helpful.

I'll be taking it to my mechanic but want an idea on what I'm up against.