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It sounds like the issue may be related to the fuel delivery system. The fact that you have found a fuel injector line that is weeping, or leaking, could be causing a lack of fuel reaching the engine, leading to it not starting. It's also possible that there could be an issue with the fuel pump or fuel pressure in the system. I would recommend having a mechanic diagnose the issue and determine the root cause. They will likely need to perform tests on the fuel delivery system, including checking the fuel pressure and flow, as well as testing the fuel injectors and pump to see if they are functioning properly. It may also be necessary to replace any faulty components in the system to get the engine running again.