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The issue is resolved but the fix was unexpected. I am posting since I didn't find the particular solution referenced in any forum. It may help someone experimenting the same problem.
The engine cranks and starts immediately then systematically dies after 6 seconds. The rule is 1. check the boat and 2. check the engine.
1. I went through an inspection of the fuel line, suspecting an air leak. I tested the line by adding a clear vinyl tube before an automobile fuel pump and a discharge in a auxiliary tank. No air bubbles. I doubled checked by connecting the auxiliary tank to the engine and starting the engine. It died after 6 seconds. Fuel supply is plenty and clean. All connection on the harness are checked with no issue found.
2. Fuel filter and water separator/detector before the pump is checked, good flow to the pump, no issue. I am suspecting the pump went bad but the engine is still under warranty and I won't touch it. I move to the electrical and check the fuses, relay, still thinking about the pump. The main 50 A fuse is blown. I replace it with the spare, start the engine and it runs like it should.
I am quite surprised that the engine would start and the tilt motor would work without the main 50 A fuse. I thought this fuse was the engine gate keeper.
Note: I am not worried about the fuse blowing since the boat went through some electric work, i.e. the start battery bank was moved from the transom area to the center console. This work involved pulling wires from the transom to the helm and installing 2 connection studs in a dry storage box to connect the engine wires to the extended battery wires. It is quite possible that I accidentally created a quick short when connecting the wires in a small space. However your opinions about the reasons for the fuse to blow matter, please feel free to advise.
The engine cranks and starts immediately then systematically dies after 6 seconds. The rule is 1. check the boat and 2. check the engine.
1. I went through an inspection of the fuel line, suspecting an air leak. I tested the line by adding a clear vinyl tube before an automobile fuel pump and a discharge in a auxiliary tank. No air bubbles. I doubled checked by connecting the auxiliary tank to the engine and starting the engine. It died after 6 seconds. Fuel supply is plenty and clean. All connection on the harness are checked with no issue found.
2. Fuel filter and water separator/detector before the pump is checked, good flow to the pump, no issue. I am suspecting the pump went bad but the engine is still under warranty and I won't touch it. I move to the electrical and check the fuses, relay, still thinking about the pump. The main 50 A fuse is blown. I replace it with the spare, start the engine and it runs like it should.
I am quite surprised that the engine would start and the tilt motor would work without the main 50 A fuse. I thought this fuse was the engine gate keeper.
Note: I am not worried about the fuse blowing since the boat went through some electric work, i.e. the start battery bank was moved from the transom area to the center console. This work involved pulling wires from the transom to the helm and installing 2 connection studs in a dry storage box to connect the engine wires to the extended battery wires. It is quite possible that I accidentally created a quick short when connecting the wires in a small space. However your opinions about the reasons for the fuse to blow matter, please feel free to advise.
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