In the midst of replacing my WP and Opti, I didn’t reinstall the AIR pump but left the plumbing in place. I stuffed a wadded up paper towel in the stainless pipe that connects to the outlet of the pump. Well my idiot self didn’t realize there is SUCTION when the engine is running. I took the car for a short drive. My guess is the the paper towel got sucked into one of the manifolds. Is it possible for debris to get past the check valves? Should I try to fish the paper out or will it get burned up in the exhaust? I don’t really care about the AIR system working. I just need it to be installed for the emissions test, the visual inspection aspect anyway.