Hey folks, Long time stalker first time poster here. Great place by the way.
Well i need some advice. Just bought the boat in early january and started having problems right away. Being a new boat owner some things came up that took some figuring out but for the most part i solved all the causes and am now sorting out all the effects. Had a
water issue in the fuel tank. Turns out it was coming in from the gas cap, filler housing. Solved the issues by replacing the filler and cap but in the process ran water through the boats fuel system. Ended up changing the injectors cleaning the fuel rails swapping out both
filters , the water separating filter as well as the main filter on the cool fuel system. Did all the work myself as i am mechanically inclined and well tooled. Boat has been running good till and getting lots of fishing in when yesterday we were out and the boat just died while
trolling around. Put the gauge on the fuel rail and it read zero, drained the rail a bit with the bypass button and got it to pressurize, ran for a few minutes then died, sputtered out (no back firing just sputtered out). I thinks its either the high pressure or low pressure fuel
pump that is giving out, maybe time related and or all the water i ran through it. So it has the cool fuel box which has the two pumps and the filter inside, already changed the filter, is it going to be a hard job to replace the pumps? Do i need to take the boat out of the
water to change it as i was able to change the filter while it was in the water. I keep the boat slipped in salt water in the sf bay area. I priced out the pumps and they dont seem that expensive so i am okay with doing the job. I have already been through the rest of the
fuel system and this is all that left as far as i can tell. Replaced all the lines that are not high pressure, swapped all the filters. Swapped the barbed one way on the tank, changed the dip tube in the tank. cleaned the high pressure lines and fuel rails, and installed new
injectors on the motor. So all i can think of is the pumps. Any advice would be great. Oh yeah i was wondering if the water that runs through the cool fuel system would be opened on the boat when i remove the fuel pumps and flood and sink my boat. Again thanks for
any advice. I will post a follow up to this as i move forward as i know this is good info to have. I might even make a video of changing the filters for other people looking to do the same project. Thanks again.
Boat info. 2005 trophy 2359 hardtop
5.0 mercruiser stern drive
motor serial number 0w344201
family 5m9xm05.0gme
date of build apr 2005
displacement 5.0l
Post script: Boat had 435 hours on it when i bought it in jan , it now has 529 hours on it. Im using the boat as much as i can,
Well i need some advice. Just bought the boat in early january and started having problems right away. Being a new boat owner some things came up that took some figuring out but for the most part i solved all the causes and am now sorting out all the effects. Had a
water issue in the fuel tank. Turns out it was coming in from the gas cap, filler housing. Solved the issues by replacing the filler and cap but in the process ran water through the boats fuel system. Ended up changing the injectors cleaning the fuel rails swapping out both
filters , the water separating filter as well as the main filter on the cool fuel system. Did all the work myself as i am mechanically inclined and well tooled. Boat has been running good till and getting lots of fishing in when yesterday we were out and the boat just died while
trolling around. Put the gauge on the fuel rail and it read zero, drained the rail a bit with the bypass button and got it to pressurize, ran for a few minutes then died, sputtered out (no back firing just sputtered out). I thinks its either the high pressure or low pressure fuel
pump that is giving out, maybe time related and or all the water i ran through it. So it has the cool fuel box which has the two pumps and the filter inside, already changed the filter, is it going to be a hard job to replace the pumps? Do i need to take the boat out of the
water to change it as i was able to change the filter while it was in the water. I keep the boat slipped in salt water in the sf bay area. I priced out the pumps and they dont seem that expensive so i am okay with doing the job. I have already been through the rest of the
fuel system and this is all that left as far as i can tell. Replaced all the lines that are not high pressure, swapped all the filters. Swapped the barbed one way on the tank, changed the dip tube in the tank. cleaned the high pressure lines and fuel rails, and installed new
injectors on the motor. So all i can think of is the pumps. Any advice would be great. Oh yeah i was wondering if the water that runs through the cool fuel system would be opened on the boat when i remove the fuel pumps and flood and sink my boat. Again thanks for
any advice. I will post a follow up to this as i move forward as i know this is good info to have. I might even make a video of changing the filters for other people looking to do the same project. Thanks again.
Boat info. 2005 trophy 2359 hardtop
5.0 mercruiser stern drive
motor serial number 0w344201
family 5m9xm05.0gme
date of build apr 2005
displacement 5.0l
Post script: Boat had 435 hours on it when i bought it in jan , it now has 529 hours on it. Im using the boat as much as i can,
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