Hi guys, I bought an 05' GT about a week ago with 2500 miles on it. The second day I had it I noticed a knocking sound coming from the passenger side of the motor. It does it after you drive it for a while and when it starts it won't stop, but if you cut the car off and start it back up, the knock quits. It sounds like a valve train noise to me, but it's not a tick, it sounds like somthing hitting. Any ideas on what it could be? Car has good oil pressure and is full of oil. Thanks cg.