Electric instead of pulse

I have an older Johnson 5.5HP that uses a junk pump tank (mile master). The tank finally died and I have ditched it in favor of a much better setup.

I do not wish to use a pulse pump, and I have my reasons. My boat already has a marine battery in it for my 40LB trolling motor so I am going to use electric to deliver the fuel.

I plan to:

Cap the port on the engine used for air for fuel delivery system.

Run fuel line from the tank to the electric fuel pump, then to the carb. I will have a filter post-pump before the carb.

My Question:

The fuel pump delivers 2-4 PSI. Is this:

a) enough for the motor at WOT
b) low enough that gas will not shoot from the carb or cause other issues.

Thank you

 

That is a terrible idea!
With the engine tilted, or if the float valve doesn't close, fuel is pumped overboard until the tank is empty.

In road vehicles with electric fuel pumps, a safety circuit operates the pump for just a few seconds before the engine is started and resumes operation only when the engine is running. That avoids at least some dangers of fuel spills but cannot prevent small leaks.

 

I know how they work, i'm asking specifically about the PSI.

There is no pulse pump available locally and i'm not sitting on my thumbs waiting on the mail guy

 

here i will humor you. Can I use any pulse or must it be the Mikuni?

http://www.lowes.com/pd_396399-4674...66.182.80.213&currentURL=?Ntt=pulse+fuel+pump

 

Johnson specifies 1 psi minimum at idle rpm for all small engines, at WOT there is 4 psi.

Any outboard pulse pump will do, directly mounted to the crankcase or otherwise with a short hose and a makeshift flange if the mounting holes do not match.

 

cant see you creating anything better than a crankcase driven pump as CDK mentions
set and forget.

 

I've rigged electric pumps for remote tank locations before. You'll need a pressure regulator and a cutoff switch (oil pressure, field generation, whatever) so the pump can't run with a dead engine.

 

Outboard stuff i would need to order. A briggs and stratton pulse pump (3 line, works same way) i might be able to find

 

I picked up a trolling motor and ordered the Mikuni. Thanks guys