Rising oil level in 316.

[Tractor Beam]

I have a 1984 John Deer 316 with the Onan B43E series engine in it. It all of the sudden began having a drastically rising oil level as in 5 to 6 inches above the full mark within a half hour of running and then flowing through the crankcase ventilator and flooding the air cleaner and carb with oil. The fuel pump is externally mounted to the engine heat shroud and was replaced with no effect. The only other thing I can think is the carb leaking fuel past the rings. Is this a possibility? If so, would a carb rebuilt solve the problem or am I needing to look at another motor for this unit?

 

[ducks13]

There is a reed valve or something that will make it burn oil through the crackcase vent, do a search on this site to find the particulars. Weekend Freedom Machines: <b>Restoration and Repair Forum</b>

If you are talking about the dipstick reading high after running they all do that; oil somehow get forced up the dipstick tube and then it won't drain back down until you take the dipstick out. After letting it drain for a minute or two you should read the normal level.

 

[Tractor Beam]

I'll look at it this morning and report my findings. There seems to be no gas smell to the oil and upon shtting it down after if overflows, it sounds like something boiling the crankcase. Kind of a "plup plup plup" type of sound.

 

[Tractor Beam]

There is a reed valve or something that will make it burn oil through the crackcase vent, do a search on this site to find the particulars. Weekend Freedom Machines: <b>Restoration and Repair Forum</b>

If you are talking about the dipstick reading high after running they all do that; oil somehow get forced up the dipstick tube and then it won't drain back down until you take the dipstick out. After letting it drain for a minute or two you should read the normal level.

Thank you for the info! I wound up getting a bunch of advice over at another forum too, that really is helping. Weekend freedom machines was a site I belonged to for about 4 minutes until I realized that that place was shucked full of rude non helpful people. Left there and have never been back.

 

[glc24]

Weekend freedom machines was a site I belonged to for about 4 minutes until I realized that that place was shucked full of rude non helpful people. Left there and have never been back

That is very odd,WFM has always been a very helpful place for me,and I've never read anything negative about the site or its members either.

Greg