1990 Ford F-250 Q&A
1990 Ford F-250 Question: How do I set/adjust the timing?
Unplug the SPOUT connector and set the timing to 10 degrees, Do this after the engine is warmed up and at a normal idle speed. The SPOUT connector is a little 2 wire black or gray connector that rests near the distributor. It disables the computer controlled timing so you can adjust it accurately. - dandd