Faulty fuel injectors: If your engine has faulty Cummins injectors, they can cause a return flow or drop in fuel pressure, which alters the amount of fuel reaching the engine. Faulty injector pump problems: Pumps directly affect the fuel pressure and injectors, and a faulty pump can do a lot of expensive damage. Scheduled Maintenance. Ford recommends the fuel filter be changed every every 15,000 to 20,000 miles on Power Stroke diesel F-250s and Super Duty trucks. Late model gasoline F-250s have a filter in the fuel tank that should last the lifetime of the vehicle. If it doesn't, you'll have to drop the gas tank in order to access it. To do so, first disconnect the main fuel line at the end of the rail along with any lines at the opposite end. Unscrew bolts or screws securing the rail in place, uncouple related wiring, then pull the rail away from the fuel injectors. Shown here, a typical fuel rail has been removed with injectors attached. Seal kit is about 20 bucks at Cummins. You should do it as soon as possible and it may get worse tomorrow. 99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs. Ruenell front bumper and warn winch, Rancho adj shocks. 735,000 MILES. Step 3. Remove the fuel rail mounting bolts with a socket wrench and take out the fuel rail and injectors as an assembly. Place a flat head screwdriver between the injector cup and clip finger. Push the clip finger out and remove it from the cup notch. Use pliers to pull the clip parallel to the fuel injector groove and remove it from the fuel . Drain the fuel from the cylinder heads. Loosen the drain plugs, located at the rear of each cylinder head. 3. Remove the oil drain plugs. 4. Remove the bolt and the oil deflector from the fuel injector hold-down plate. NOTE: Rocker arm removed for clarity. 5. Remove the fuel injector outboard retaining bolts. In this video, I will be getting an overview of how to replace a fuel injector in a Ford 6.0 Powerstroke diesel engine. I will give a rundown of all the tool Engine misfiring or fluttering. Carbon build-up on the injector seating, the washer that sits between the seating and injector, or on the nozzle nut. A damaged o-ring. Bursts of white smoke on start-up. Bluish tint on the injector above the seating (this is a sign that combustion heat is making it past the seat) World Leader and Supplier of Diesel Fuel Injection Systems. Since 1997, Bosch common rail injectors have been the industry standard for Diesel Fuel systems. Bosch is known world-wide as the leader in fuel-injection technology and engineering. When it comes to choosing the right injector, the Bosch name equals quality. For more info. Replacing the injector harness is not all that difficult. The thing to be careful of is the clips on top of the injectors. Remove them carefully and don't drop them. Pay attention to how the harness is routed. As far as tools, not much really. Metric socket set (1/4 inch), ratchet, an extension or two, pliers and a screwdriver.

how to change diesel fuel injectors