Originally Posted by fla.sailor
The oil level on my Honda
25 HP (4 stroke) has risen since I last changed the oil (400 miles). When I say risen, I mean almost to the point of almost to the point of coming out of the dip stick tube!!
Any suggestions/ideas? I've been told that it might be a fuel pump
I have a 15hp Honda and a few years ago I noticed that the oil level had gone up. I called a bunch of places and got a lot of different opinions. Many offers to "drop it off".........you know what that means?
I finally found an ex-outboard repair man (Honda) who asked a few questions first.
As it turns out I was very careful to close the tank vent each time we stopped the boat to cast at "that" spot. Don't want gas fumes collecting in the bottom of the Jon boat.......how paranoid is that when with the kids
Well, what happens in the Honda is that the sun shining on the tank makes the air warm and............you don't need the physics explanation.........the gas gets forced into the engine
I don't remember the pathway.....well maybe.......if an intake valve is partly open the gas is forced (over time) past the rings. Don't ask me how it gets past he carb - but it does.
Maybe this is your problem. The heating
of your tank, even in a locker.
Cure for sure - disconnect the fuel
line when not in use.