For years I have been hearing how the ethanol in gas has been causing all kinds of nightmares for people with outboard engines, or marine engines in general. I just never really ran into problems that most complain about, or I just never realized it.
I'm going to keep this short but thought it was worth posting up for dummies like me.
The other day I took my smaller boat out for the first time, I still had 3/4 of a tank of fuel from last year and no I did not treat it with anything for the winter. It started ok but was sounding a little rough, I did have one incident where I had to toss the anchor for a half hour let it sit before I could get the engine started, so after that little episode I thought maybe the engine could use a little attention.
I went to work on the problem and thought I would start with my fuel filter, but decided to empty it in a clear jar so I could get a good look, well SURPRISE...half the liquid in the jar was water, ok no problem I will go get a new filter and plugs.
I bought a new fuel/water separator filter and some new plugs,
I installed both and hit the river again with the boat, it ran but I had issues putting it into gear without it stalling etc.
I had a pretty good feeling I was dealing with the same issue of water in my fuel, so tonight I pull the new filter and poor it in a clear jar and SURPRISE half water, so I took a picture to share.
I did drain the rest of the fuel in the built in tank and have about 5 gallons of this fuel I have no idea what to do with.
I will now be treating my fuel every time I fill up. And to think this is only part of the problem the damage done to the rubber seals etc is a whole different issue.
The first picture on the top is the jar after just a little swishing around, the picture on the bottom is the fuel and water settled you can see the separation line clearly.