1988 evinrude 40hp smokes a lot

[icefisherman]

My dad has a 40 hp vro evinrude, when i took it out sat. it would smoke really bad at idle and while driving. It ran fine other than a little bit of a rough idle. Could it be getting too much oil? The oil in the resevior is pretty old too. Is there something that regulates the oil flow? It had a little oily fluid comming out by the prop but I think that is a seal. Any other ideas?

[Surface Tension]

The VRO unit has a oil pump and a fuel pump. That pump is driven by an impulse hose coming from the crank case. VRO failure is a pump that is not pumping fuel and or oil.

A rotted hose or bad connection is one cause for that failure the other is the diaphragms in the pump wear out.

Pumping excess oil is not something known to happen with a VRO.

Is that cloud you see stream? That steam could be from an impeller on its way out, bad t-stat, or a gasket.

[icefisherman]

Surface Tension, I dont think its steam. It lingers in the air for a while like smoke and smells like smoke as well. Any other ideas?

[boatfixer]

They are not known to "overmix", however, any restriction, impedance or other interuption in the flow of the gas will result in a rich mixture. As the engine runs and the pump pulses, the correct amount of oil is pumping, just not enough gas coming to the party. Check all connections and change the filter.

[icefisherman]

Boatfixer I did notice on sat when I took it out I had a hard time getting the gas line to click and stay on. If I pulled on it just a little bit it would fall off. So maybe I need a new gas line?