Strange engine flooding

[webman]

Picked up a 80 Liquifire with a motor what would not pull over. Thought it had ice in it, but turned out it was just badly flooded, with oil. The 2 stroke oil had completely filled the block to the point it was coming out the carbs. Guess the crank and bearings should be good.

Would this be a problem with the oil pump, or just being stored with the rear end too high?

[AirborneX4Special]

The oil tank is mounted high relative to the engine to avoid air pockets in the oil flow, but there must be a seal or diaphragm system to keep the oil from bleeding out that has failed. Any oil left in the tank? Was the case full of a gas / oil mix or straight oil? Usually a tank bleed out results from an oil line break.

[nick80lf]

The banjo fittings at the oil injection ports have check valves inside them. The pressure of gravity shouldn't be enough to overcome the spring pressure of these internal check valves. With that said a 100% leak free check valve is a pretty rare thing. Any idea how long it takes to empty the tank? I know one of mine sat for about 10 years and didn't do that.

I haven't studdied the internals of the injection pump enough to say if something in there would also prevent oil from passing through it.

On the 80s an oil tank that empties itself is usually caused by the leaky threads on the 90 degree fitting in the bottom of the oil tank. Deere fixed this on the newer sleds by using the same bushing setup used on the fuel tank.

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[webman]

It was just oil. The sled has sat for about 6-8 years outside. Looks like the engine was redone just before being parked, and was told they were having problems keeping it running. WIll check the check valve, maybe something is stuck in it and was causing the problems from before.

[AirborneX4Special]

I've never seen one bleed out that way either.

Didn't know the banjo fittings had check valves. Learn something new every day!