1994 Ford Bronco 5.0L VECI Emissions Label - Timing, Spark Plug & Vacuum Routing

This is a photograph of a Ford Motor Company Vehicle Emission Control Information (VECI) / Important Vehicle Information underhood decal for a 1994 model year Ford light-duty truck with the 5.0L gasoline engine. The label states that the vehicle is equipped with electronic engine control systems and that engine idle speed, idle mixture, and ignition timing are not adjustable, referring readers to the Powertrain Control/Emissions Diagnosis Manual. It gives a five-step procedure for checking base ignition timing: turn off the engine, disconnect the in-line SPOUT connector, restart the warmed-up engine, verify ignition timing is 10° BTDC, then turn the engine off and restore the connection. It specifies SAE 10W-30 API-certified oil for gasoline engines and states the vehicle conforms to U.S. EPA regulations for 1994 model year light-duty trucks with curb weight greater than 3,450 pounds. Tune-up data includes spark plug ASF-42C with a gap of .052–.056. Calibration/label identifiers shown include F4AE-9C485-KSP, RFM1045AYM0A, and RFM5.888GBJA with emission system codes OC/TWC/AIR/HO2S/EGR/SFI, plus a 'Catalyst' designation. The right portion of the label contains a color-coded vacuum hose routing diagram, though it is partially cut off in the photo.