OldThompson
New member
Hello,
I have a 1986 Mercruiser 170, 3.7. I just got it this winter and haven't run it yet. The fuel fill and supply hoses were all very old and leaking. I've already replaced the fill hose to the tank and breather hose. Now I'm working on replacing the fuel supply hoses to the fuel pump(s). Turns out that the original mechanical pump is still on the engine and that an electric fuel pump and filter was installed in the fuel hose between the tank and mechanical pump. I assume the mechanical pump went bad at some time and so someone replaced it with the electric and just kept pumping fuel right through the mechanical pump. I pulled the filter cup off the bottom of the old mechanical pump and it appears dried out with considerable corrosion in there.
I'm trying to decide if I should just keep things the way they are or should I go ahead and replace the mechanical pump and eliminate the electric one?
Thanks
I have a 1986 Mercruiser 170, 3.7. I just got it this winter and haven't run it yet. The fuel fill and supply hoses were all very old and leaking. I've already replaced the fill hose to the tank and breather hose. Now I'm working on replacing the fuel supply hoses to the fuel pump(s). Turns out that the original mechanical pump is still on the engine and that an electric fuel pump and filter was installed in the fuel hose between the tank and mechanical pump. I assume the mechanical pump went bad at some time and so someone replaced it with the electric and just kept pumping fuel right through the mechanical pump. I pulled the filter cup off the bottom of the old mechanical pump and it appears dried out with considerable corrosion in there.
I'm trying to decide if I should just keep things the way they are or should I go ahead and replace the mechanical pump and eliminate the electric one?
Thanks