the db2 injector pump was not designed for low sulfur diesel! you must add an additive. put clear vinal tubing on pump and injector return lines to monitor air intrusion. hook up a garden sprayer and spray on injector pump if hot and no start condition, cold water works but not as well. Stanadyne additive is best and Walmart 2cycle oil is cheapest Couple of ounces per tank is enough. the new glow plugs need more time to deliver an ideal start! Consider the ford solenoid mod it is cheap.
92 chevy CK2500 354K miles. Underdash fuel gauge,teed into injector pump inlet with a needle valve air bleeder. Under dash ammeters on port and starboard glow plug circuits. Under dash oil pressure, and temperature guages. Rebuilt Tranny