Fuel in fuel pump oil?
 

So I assume this means my fuel pump is bad. I went to check the level today on my sea water mounted mechanical pump and fluid came screaming out. It was like it was over full probably because of all the gas in there.

This would explain the cutting out and stumbling with big throttle last weekend also.

I just want to be sure my findings are correct and that all I need is a new fuel pump and not a whole sea water pump too.

Anyone

Pretty common. Reference this thread:

http://www.offshoreonly.com/forums/g...fuel-pump.html

this is common on all fuel pump mounted sea pumps .and everybody replaces the pump only to find the same thing next season .worked in a marina for 12 years and if i changed all the pumps that did this i would have stock in mercruiser

fixx
 

dependine on what year the boat is?? if older then 10 yrs i would replace it,the new fuels dry up everything in the fuel system..whyle you have the seapump off and the contaminated oil is out of the housing spin the shaft and see if it spins smooth..if not you will need bearings as well.

I just treat it as a yearly maintance item,just like my Bravo.This is on a 94 502. It has gas in it every spring. No problems thus far.

so dont replace my fuel pump?

I would just change the oil for now, then check it again in about 20-25 hours.

Mine did the same thing this year when I pulled it to change the fluid. Typically I put about 60 hours a year on it, last year I did 110 so it went a lot longer than usual before I changed the fluid.

so how do you tell if the fuel pump is bad?

Mine was doing it. I finally drilled/tapped a drain hole in it so I could change the fluid without removing the pump. Changed it when I did engine oil changes.

it must not be just the sea pump mounted fuel pumps,,,i bet the block mounted are leaking the same fuel and mixing with the oil in the pan