fuel pump

[bmain11]

How hard would it be to convert a mercury 1150 inline six with 115hp from the vaccum fuel pump to an electric fuel pump?

 

[Maxz695]

Re: fuel pump

disconnect it hook it to a 12 pwer source when the engine key is turned on connect the hose and secure it should be good to go . Make sure you do not use a high pressure electric fuel pump. I think ( Not sure ) you need a 6 lb pump

 

[bmain11]

Re: fuel pump

Thanks. I am not getting fuel up into my carbs. I think I am going to replace the vaccum lines as they look old and dry rotted. Any other ideas on what could be going on?

 

[Maxz695]

Re: fuel pump

other than rebuilding your fuel pump theres no much eles you can do

 

[dcf]

Re: fuel pump

fuel pumps are easy to rebuild, the kit should be under $20, just replace a few gaskets,

 

[Chris1956]

Re: fuel pump

Installing an electric fuel pump is easy. Making it safe is another matter. You will want the pump to shut off automatically if the motor stalls, so it doesn't pump fuel all over the boat.

The only way I know to do this is to wire the fuel pump to the stator and the ign key start pole. You will need some diodes to isolate the starter and stator circuits from each other. When starting the motor, the pump is supplied by the ign switch. When the motor is running the stator provides the electricity.

 

[dcf]

Re: fuel pump

well put Chris, they can be dangerous,

 

[Gomer50]

Re: fuel pump

I thought about an electric fuel pump as well, and with all the info given on the dangers etc. I just rebuilt my fuel pump,new lines,bulb and she works just like she is supposed too.Nothing like having the motor die for whatever reason and the electric fuel pump still spewing gas all over the place.

 

[Maxz695]

Re: fuel pump

The float needle valve does not allow gas to flow when it is full but yes that too is a danger overloading the carb due to a failing needle seat. This really isn,t a good idea but you asked if it could be done. I answered

 

[bmain11]

Re: fuel pump

Well it sounds like I will just replace the lines and see where I get from there. Hopefully this works for me. Thank you all for your help.

 

[79Merc80]

Re: fuel pump

My father put one on our old Glaspar, but also installed a pressure regulator and set it at 1/2 lb. The idea was to help the internal pump (Fuel tank was in the bow) without putting enough pressure to hurt the internal pump and also not enough to push by the needle and flood the carbs.

Never had a problem with that setup (1967 - 1987), but that doesn't mean that it's the best idea either.

Craig