Need some help guys. On my way back from oil change, my engine (bay area) started making a weird sound which could only be described as a weed whacker sound which matches my gas pedal input.

Checked the oil and it was completely full. No visible fluid leaks on the engine or garage floor. When I started to move the car out/into my garage just now, the oil light comes flickering on and off. It does not stay on.

The car also felt like it had very little power, but I wasn't trying anything with this sound.

Any ideas or where to start.

 

Added audio

Sound

 

it's unclear... 1 time is sounds like a knock and the other sounds like a crazy exhaust leak.

 

Well I did some logging with the car and revved up and my KnockSum was 0 the whole time.

 

did you check by the manifold for an exhaust leak?

 

Found a piece of garden house and did some listening and the sound is definitely coming from the back of the turbo somewhere.