Does a dragging starter stop 7.3 diesel from starting?

Yes. A dragging starter can stop a 7.3 diesel engine from starting. When the starter drags, it draws too much current from the battery, which can cause the battery to go dead or the starter to burn out. This can prevent the engine from getting the power it needs to start. Additionally, a dragging starter can damage the flywheel, which can also prevent the engine from starting.