What's up everyone this is my first time here so go easy on me. I have a 99 Eldorado and it has a tapping sound that annoying me. I had the lifter changed about 3 years ago by the dealership thinking this would fix the problem.:bomb: Of course it didn't. But the strange thing about this, is that when I get an oil change or if the car is just at idle it's not as loud. But it's really loud when I first start the car. Can anyone help me? Thanks.