I was looking at a 99 camry with a 24 valve 3000 engine in it over the weekend and it had a noticeable noise under 2800 rpm but would disappear at above 2800 rpm. Did this engine have vvt and could it be normal? Sounded like it was coming from the top end and could have possibly been valve train noise. No ticking but a low rumble. Was curious if you others have noticed this problem and was it normal? Thanx.