I recently noticed a fuel leak and traced it down with the use of colored tissue papers to the High Pressure Pipes that lead from the Fuel Injector Pump to the Fuel Injector Nozzle. I tightened the Delivery Valve Holder (see picture), which was a bit loose, and this seemed to stem the flow. However after looking at the Service Manual, I noticed that these are supposed to be tightened to a specific torque. My question is, can I replace just the Delivery Valve Spring holder and the 0-ring or do I need to replace all the elements that make up the entire mechanism (not exactly sure what it is called). Has anyone attempted this before? Thanks! -Jon
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