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i own a 2005 bennington pontoon, the outboard motor is an 115 mercury optimal outboard. it was running fine yesterday. Today we were on the lake and as i opened it up and was running it just turned off. started and ran 100 yards died again. ran in water for about 5-10 minutes and it runs fine without stalling out. it just dies when i run it. Not sure if it is fuel filter, or plugs or what. out of town and have family reunion need answer
Optional Information: Make (of engine): 2005 mercury optimax outboard Model (of engine): optimax Year: 2005 Horsepower: 115 Already Tried: nothing
Hello my name is XXXX XXX I will assist you. Ok first thing you need to check is the fuel filter and fuel line coming from the tank. Make sure that there is no debris in the fuel filter and that the fuel line is not kinked or bent somewhere in the boat. Also check for a proper vent in the tank as if it is blocked it will starve the engine for fuel. You can try running the boat with the fuel cap open and see it makes a difference for the vent issue. An easy try for all the above is to try run the engine with another fuel tank and see if it runs ok. If it still dies then the problem is within the engine. At this stage you would first need to verify the air and fuel pressure which should be 108 psi for fuel and 94 for air +- 2psi. If one of them is different then it would need to be verified. If it is an air issue the compressor and direct injectors need to be tested and if it is fuel the the fuel pump and regulator would require testing. Ideally this testing is done by using a diagnostic tool.IF you need further assistance or have further questions let me know.Noel