Hi I am new here, I have a 2005 Explorer it has the 4.6 in it and I am having a nightmare of an issue I just replaced the intake manifold and right after it drove fine but, it has lost engine power and is making a super loud screeching noise. At first, I thought it was the PS pump I changed it and it was still doing it so I changed the harmonic balancer and still screeching. I checked the oil and it is fine however it smokes out the dipstick tube, I also triple checked all the sensors and none are missing or unplugged.

My question is, Does anyone know what else could cause this?