u/Clean_Health9459

I royally effed up! 😟

My son’s 2018 BMW x1 was throwing Valvetronic codes, so I swapped the servomotor. Easy on this car since it’s mounted externally. I started it up once, it ran fine but was still throwing codes. So I removed the motor again and checked the alignment and all was fine so I put it back again. But I dropped a small screw down the engine bay. When I started the engine it was making a really nasty ratcheting noise. I ran it only for 2-3 seconds but there was a small amount of smoke coming from the rear passenger side end of the engine.

You think it’s the screw causing this? What did I ruin? What’s the first thing to do?

I feel pretty stupid right now! ☹️