Where are the glow plugs located on a 7.3 diesel engine?

Answer 1

inside the precombustion chamber step1
Remove the valve cover using a ratchet, ratchet extension and socket. If you have a 7.3 lmodel, you might have to remove the mounting nut from the transmission dipstick tube and move the tube to the side. Depending on your particular model, you might have to remove other components like the air cleaner tube to gain access to the valve cover. Step 2
Detach the right-fender splash shield using a ratchet and socket if you have a 7.3l model. Also, mark a line just below the bottom rib of the evaporator case by measuring 0.39 to 0.59 inches (10 to 15 mm) from the right edge towards the wheel. Mark a line at a 45-degree angle from that point towards the outboard side of the vehicle using a crayon. Then cut that corner of the evaporator case using a utility knife. Step 3
Unplug the electrical connector from the glow plug being careful not to damage the wire. On 2004 late production models, use release tool number 303-1114 to unplug the wiring harness from the glow plug. See the Resources box for more information. Step 4
Remove the glow plug buss bar using a ratchet and socket if you have a 7.3l engine. Step 5
Unscrew the glow plug from the cylinder head or bus bar using a deep, thin wall socket, ratchet and ratchet extension, or wrench. On some models, it might be hard to get the plugs out through the narrow space using the deep socket alone. In this case, once you loosen the glow plug with the socket, push a piece of rubber hose of the appropriate size onto the glow plug, unscrew it the rest of the way and remove if from the cylinder head.