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.
Throttle Body Upgrade. Purpose. The throttle body is the part of the engine that lets air in. It is composed of 2 flaps (often called butterflies), which open and close accordingly with how far the gas pedal is pressed. A larger throttle body will allow more air into the engine, thereby improving the performance - both throttle response and horsepower. This upgrade should only be done after you've upgraded the exhaust system.