Release the Cancel button once the LED lights come on. This resets both the printer and the NVRAM together. Press and hold the Reset button near the back of a 5P or 6P printer as you turn on the power. Holding it for less than 20 seconds resets the printer only.
Once the throttle body is exposed, spray the throttle-body cleaner inside the air duct, and use the brushes to gently dislodge the dirt, gum and varnish that are present. Note: Be very careful not to let the thin, plastic spray nozzle (or anything else!) fall into the throttle-body opening.
Confidence votes 161. A throttle body spacer is a small block of aluminum that is bolted on top of a vehicle's throttle body, that has a port or multiple ports in the center of it. Most spacers these days also have either a helical cut along the walls of the port(s) or serrated edges, which help the air/fuel mixture to become more turbulent.