Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Are the glow plugs heating up? Has the compression been checked? Did you have it overhauled? And you replaced injectors? Has the injection pump been repaired? Have the valves ever been adjusted?
Engine has an electric fuel shutoff solenoid, to the left end of the injection pump. If you remove this solenoid and slip it back , does the engine start?
With the fuel solenoid out, if you reach in and move the linkage, does it spring back? It should be spring loaded, and has to move with the governor and fuel shutoff. If linkage is stuck in the off position, no fuel gets to the injectors. You mention it is not turning fast enough, could the hydraulic pump be loading the engine?