Logo
FULL SITE MENU

2015 F25ELPT Issue

K

Kevin Connington

New member
Hello fellow Mercury owners,
I've run into an issue I hope you can help with. My 2015 4stoke 25hp Merc outboard that I've had for about a year now has been perfect. Immediate starts, runs great , super low fuel consumption.
Two days ago I was on the lake and running at 3/4 throttle and she just died. My first thought was fuel, so I took apart the fuel tank and checked the pickup which seemed fine, the bulb was getting hard and so I fired her up and she ran for only a few seconds and died. Next I thought fuel filter, and took that apart and it looked great. I was stumped. Lucky I had a trolling motor to get me home.
Today I just checked for spark which was fine. So now I'm thinking fuel pump. I took it out and it is a cam driven unit that looked like it worked fine, meaning when I manually pumped the shaft it was pumping gas just fine.
So I am hesitant to buy a new fuel pump without checking with you guys. what would be your next step? Its got fuel injection so I guess that unit could be the culprit here.
Thanks for any help you guys can provide.
Kevin
 
OK I understand now why no replies...
anyhoo... there was little to no pressure at the Schrader valve, which I must say was a new one on me...a bicycle valve under the hood of my outboard? Im old I guess...
so I replaced the high pressure fuel pump at the advice of a local service guy and that made sense...
And now it kinda wants to start, but still no pressure at the schrader valve.
I tried to burp it, released a little fuel the under cover housing with the hp pump in it, then opened the schrader valve for a second, to get any air out...
And she won't start...
what could I have done wrong in installing the hp fuel pump ? it seemed straight forward...
Any help would be great...thanks & good day sirs...
KC
 
Does the fuel pump run for a few seconds at key on? That is the point at which maximum fuel pressure is typically seen.

Fuel pressure is based on the fuel pump being submerged in gasoline within the vapor separator tank. Was the VST refilled using the primer ball before the fuel pump was energized by turning the key to the on position?

What is the complete engine ID?
 
Back
Top