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air cleaner oil

M

Mertz54

Member
I'm a novice at this but thanks to a couple members on this forum, I was able to remove and clean my air cleaner on my 9N. (I also changed the plugs.)

I got 'er put back together yesterday and started 'er up. She runs much better but when driving down the driveway, I was leaving a trail of blue smoke that was quite impressive. Today she smoked again but not as bad. Is it possible that some of the air cleaner oil somehow made its way into the carb, thereby causing the smoke? I followed the directions stamped on the cone inside the cup very closely but anything is possible, I suppose.

Any thoughts?
 
Well if you removed and cleaned the whole air cleaner it could well not be dried out so what ever you cleaned it with say kero or diesel could be sucked in and then burned and both would cause that type of smoke or if you over filled the cup
 
From what I understand when these old machines were built, it was recommended that the same oil that was used in the engine was also used in the air cleaner. If you used a multi-weight oil in the cleaner, it could draw some out of the cup and cause your symptoms. Otherwise I agree with Old
 
I cleaned it with paint thinner. Someone recommended that because it is not as flammable as gasoline.
 
I have never changed the engine oil since it was given to me a few years ago because I don't run it that much. I don't really know what kind of oil is in the engine but I think it is 10W-30.

I put SAE 30 in the air cleaner because it was readily available.
 
Did you fill the cup to the level line,and not above it?Did you leave a rag up in the center tube of the breather housing?Mark
 
It really sounds like you overfilled it, and it is carrying over.

If it is getting better, then all will be well

They type of oil makes very little difference in the cup, just needs a normal viscosity range.
 
Some of the old manuals stated that you may use drained engine oil for economy. So must not be too fussy
 
"If you used a multi-weight oil in the cleaner, it could draw some out of the cup and cause your symptoms."

I'm gonna call "horse puckey" on that.

I use multi-weight oil (15-40 or 10-30) in the oil baths on several tractors, including an 8N with NO issues whatever.
 
it dont matter what kind of oil gets used. long as its not to thick like gear oil. i even use hydraulic oil in the air cleaner.
 
I use New auto tranny fluid I have sitting around that doesn't meet current specs. It's light weight and as a result, runs up the mesh easily and provides great protection. Initially I thought I'd be sucking it into the combustion chamber and would have to add frequently but that's not the case. Run it now and will run it every time thereafter.
 
If you cleaned and re oiled the mesh it could be over oiled and "oiling" the clean air causing the smoke. It would clear after a bit of running as you say is happening.
 
I should have added that you probably don't need to change the air cleaner cup oil at each oil change unless you are running it in dusty conditions. You can monitor it for a few oil changes and see how it goes for how you are using it. After a while you will know how often you need to check it for your conditions.
 
Just one more note. I have yet to be able to find an air cleaner diagram on the web that looks like this one. I will try to include a photo of mine. The cup is normal looking but there is a cone that sets down in the cup. The instructions say not to raise the level of oil higher than the tip of the cone.

Anyway, thanks to all those who weighed in on this. You have restored my faith in humanity. You should run for president...we can use you.
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