http://www.marinepartseurope.com/en/volvo-penta-explodedview-7742230-23-15122C.aspx
Hello All,
Once again I need to rely on the expert knowledge here. I discovered that my older MD11C has a fuel leak around one of the cam driven nozzles that feed from the fuel injection pump to the injectors. I pulled the exploded view of the fuel injection pump and saw that there is an o-ring where that nozzle seats into the injection pump. The o-ring is #18 on the attached image. I figured that the o-ring must be the problem i.e. o-ring had gone bad. So after much hunting around I found ordered and received several crossover part number O-rings to try to replace the offending one. I have now tried replacing the o-ring 3 times and it still leaks at the same spot (note that in the cramped space, replacing the o-ring is not easy) I am at wits end and don't understand. Thinking about it and the fact that the nozzle feeds the injector I am wondering if it might be logical that the injector is partially clogged and is causing too much back pressure through the fuel line that connects it back to the pump nozzle to cause the leak?
I am able to restart the engine and run with the leak and don't think it is misfiring on either of the two cylinders. I did notice however that If I crack the fuel line on the involved injector while engine is running that there seems to be a higher pressure "spurt" from that fuel line than the other one. Any thoughts or suggestions would be appreciated. Florida Girl Carole.
Link to a better exploded view at top of this post.
Hello All,
Once again I need to rely on the expert knowledge here. I discovered that my older MD11C has a fuel leak around one of the cam driven nozzles that feed from the fuel injection pump to the injectors. I pulled the exploded view of the fuel injection pump and saw that there is an o-ring where that nozzle seats into the injection pump. The o-ring is #18 on the attached image. I figured that the o-ring must be the problem i.e. o-ring had gone bad. So after much hunting around I found ordered and received several crossover part number O-rings to try to replace the offending one. I have now tried replacing the o-ring 3 times and it still leaks at the same spot (note that in the cramped space, replacing the o-ring is not easy) I am at wits end and don't understand. Thinking about it and the fact that the nozzle feeds the injector I am wondering if it might be logical that the injector is partially clogged and is causing too much back pressure through the fuel line that connects it back to the pump nozzle to cause the leak?
I am able to restart the engine and run with the leak and don't think it is misfiring on either of the two cylinders. I did notice however that If I crack the fuel line on the involved injector while engine is running that there seems to be a higher pressure "spurt" from that fuel line than the other one. Any thoughts or suggestions would be appreciated. Florida Girl Carole.
Link to a better exploded view at top of this post.
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