ponytug
Super Member
First, I would clean the prescreen as Woodlandfarms suggested, and then change the fuel filter. If that does not fix your problem, I would do the following;
+1 on changing that cracked fuel line. A little air could go a long way to explaining your engine symptoms. You might want to change everything while you are in there.
In general, on a diesel engine the strategy is to filter first, then pump as this traps the most debris and water. (The water does not get emulsified by the pump.) I can not think of a reason why there would be a pump inserted there for a Deutz engine.
That said, I have no idea if it is a pump or a shut off valve. If it is a pump, I would remove it. If it is a shut off valve, it may have been installed instead of replacing a failed Deutz solenoid that tend to be pricey. If it is a fuel solenoid, you do need an electric fuel shut off somewhere to stop the engine, or you will have to open the hood and manually flip the fuel shut off lever every time that you want to stop the engine. You might want to find that lever before removing the silver gizmo from the fuel line...(back left corner of the engine block.) If it is a flakey solenoid valve, it might also explain your fuel starvation issues. Have you checked the wiring on it to verify that it gets, and keeps, 12V when the engine is running?
Unless you are seeing crud or water in your diesel, probably do not need to prefilter your diesel. If, like Woodlandfarms, you live somewhere damp and rainy, it may also be worth it to upgrade your engine fuel filter to a water blocking filter. Again, the Deutz filtration is both very good and quite tolerant of impurities, assuming that the prefilter gets cleaned regularly and the fuel filter gets changed as needed.
Good luck!
All the best,
Peter
+1 on changing that cracked fuel line. A little air could go a long way to explaining your engine symptoms. You might want to change everything while you are in there.
In general, on a diesel engine the strategy is to filter first, then pump as this traps the most debris and water. (The water does not get emulsified by the pump.) I can not think of a reason why there would be a pump inserted there for a Deutz engine.
That said, I have no idea if it is a pump or a shut off valve. If it is a pump, I would remove it. If it is a shut off valve, it may have been installed instead of replacing a failed Deutz solenoid that tend to be pricey. If it is a fuel solenoid, you do need an electric fuel shut off somewhere to stop the engine, or you will have to open the hood and manually flip the fuel shut off lever every time that you want to stop the engine. You might want to find that lever before removing the silver gizmo from the fuel line...(back left corner of the engine block.) If it is a flakey solenoid valve, it might also explain your fuel starvation issues. Have you checked the wiring on it to verify that it gets, and keeps, 12V when the engine is running?
Unless you are seeing crud or water in your diesel, probably do not need to prefilter your diesel. If, like Woodlandfarms, you live somewhere damp and rainy, it may also be worth it to upgrade your engine fuel filter to a water blocking filter. Again, the Deutz filtration is both very good and quite tolerant of impurities, assuming that the prefilter gets cleaned regularly and the fuel filter gets changed as needed.
Good luck!
All the best,
Peter