Crazy screech after torquing plenum!!!


New member
Hey guys, so I changed my valve cover gaskets a while back, I didn't have my torque wrench so I hand tightened everything. Today I undid the bolts and torqued the valve covers, lower and upper plenum. I turn the car on and the loudest screech comes screaming back! I'll post a video. I assumed it was some sort of air leak but all the hoses are in, the coolant hoses I unplugged from the throttle body spilled some coolant but I dont think a little bit of air in the hoses would make this much noise!