The diesel injection pump, also called high pressure fuel pump (HPFP), is driven, on most vehicles, by the timing chain, timing belt, or timing gear. It receives slightly pressurized fuel from the fuel tank in a large volume, and attempts to compress the liquid, resulting in a moderate flow at an extremely high pressure. Ken Jackson. 3 posts · Joined 2012. #5 · Apr 9, 2013. replace injectors takes about 4-6 hours , easiest way to do it, pull valve covers, remove gasket and disconnect wires from injectors and glow plugs. remove 8 mm bolt at lower injector. pull glowplugs. use prybar under steel mounting holddown below injector head. do not pry or ever hit this How To Install DT466 Injectors. If you have removed the injectors, then you have all the hard work done. All the parts in the way have been removed and set aside. All you have to do is put the new injectors in the old one's place and use your torque wrench to get the right amount of torque. The cost of fuel injector replacement typically ranges from $350 to $850, depending on several factors such as the type of vehicle, number of cylinders, and location. Fuel injectors spray fuel into the engine’s cylinders, with one injector for each cylinder. Fuel pumps send fuel from the gas tank to the injectors through gas lines. The driving would allow the system to have removed all air from that change before introducing more with the pump change and line removal. 93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93.
Cleaning excess carbon with a glow plug hole reamer. Attach all the fittings and injector lines and new braided rubber return lines as well as the end plug on the fifth injector. Do not fully tighten the hard line fittings at the injector end. Now the air has to be bled out of the fuel system.
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)
