Warm idle engine knock!?!?!? Help!

[S550mustang888]

First post on here but I really need some insight on this!! Can someone please tell me what is making my car sound like a diesel engine!? Sounds good on cold start but once warmed up and rpms drop sounds like a diesel! You can rev it and it goes away!?!?

Sponsored

 

[GT Pony]

Did it just start making that noise? How many miles on the car?

 

[S550mustang888]

I noticed it about a week ago sitting in my garage and only 32,000 miles

Sponsored