Any help would be greatly appreciated........The Deutz f4m1008 engine on my mini-excavator will start fine and it will run for about 5-10 minutes and then starts sputtering for 15 - 20 seconds or so and then it konks out. I can restart it again, after a few minutes. Then, after a shorter 2 minutes of running, it konks out again. I can do this ten times in a row if I wanted to and it does the same thing, run 2 minutes then quit. The fuel cap was removed to check if it was a vaccuum problem and that didn't help. There are no fuel line obstructions. I replaced the fuel filter and found that one of the stems on the fuel pump (I assume it is the pump on top of engine) was loose. I was happy thinking that I had found the problem, but no such luck. Anyways, the radiator is full, as is the oil. I added additional conditioner as well as anti-freeze in case of moisture. I am wondering if the solenoid for the fuel cut-off is malfunctioning.Thank you in advance for any help.
Water in fuel is your best bet. I t could be the cut of if you have wiring shorts but the cutoff circuits are pretty stable. power the cut off solenoid separately with a separate jumper. If you run it as a separate circuit you will know quickly if it is the problem. If it is not the solenoid then it is a fuel or air problem.
Tank screen or air in lines.You can have bad diesel(water in fuel).
