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Morning,The EDIC has nothing to do with maintaining prime in your fuel system. It is only for starting and stopping the engine. It is an electric/mechanical part that does not touch the fuel in any way. (Yes, the EDIC could have been damaged due to an electrical failure.)
The EDIC receives an electric voltage input from an oil pressure switch. It is not involved in regulating oil pressure in any way. If you have less than 10psi of oil pressure at idle the EDIC will shut off your engine by moving the fuel rack in the injection pump to the "off" position.
If you indeed have oil pressure problems they are not related to your fuel system not maintaining prime. The fuel system should maintain prime even if the engine is not started for years. You potentially have multiple, unrelated issues that need to be diagnosed individually.
There are lots of reasons your fuel system won't maintain prime. The most likely culprits: 1) the o-ring on the primer pump is bad 2) their is a bad connection or a rusted fuel line between the fuel tank and the lift pump 3) sometimes the return/overflow line coming from the injectors will leak air but usually not enough to completely lose prime.
This is what I wanted to say too. Thank you for the explanation.The EDIC has nothing to do with maintaining prime in your fuel system. It is only for starting and stopping the engine. It is an electric/mechanical part that does not touch the fuel in any way. (Yes, the EDIC could have been damaged due to an electrical failure.)
The EDIC receives an electric voltage input from an oil pressure switch. It is not involved in regulating oil pressure in any way. If you have less than 10psi of oil pressure at idle the EDIC will shut off your engine by moving the fuel rack in the injection pump to the "off" position.
If you indeed have oil pressure problems they are not related to your fuel system not maintaining prime. The fuel system should maintain prime even if the engine is not started for years. You potentially have multiple, unrelated issues that need to be diagnosed individually.
There are lots of reasons your fuel system won't maintain prime. The most likely culprits: 1) the o-ring on the primer pump is bad 2) their is a bad connection or a rusted fuel line between the fuel tank and the lift pump 3) sometimes the return/overflow line coming from the injectors will leak air but usually not enough to completely lose prime.