Massey Ferguson 285 oil in air intake

Dandale1971 · Nov 5, 2022

My MF 285 leaks oil from the air intake manifold. I was hoping for an easy fixnew air, oil, and fuel filters. Changed the oil. Put new belts on. Resealed the gasket. Still leaks. Any clue what to do next?

Janicholson · Nov 5, 2022

Finding a leak like that will require some additional analysis. If the air intake gasket is leaking, there should be zero oil leakage as there should be no oil inside the manifold. to leak. if the oil is appearing to come from the manifold, maybe it is leaking from above. The valve cover gasket could be the issue! The engine fan an blow oil from a more frontal area onto places that just appear to be the leak. Pressure washing the area (carefully to avoid more damage) or using a degreaser to get to original paint/metal can assist in the diagnosis. Jim

Michael Soldan · Nov 5, 2022

Is There a PCV valve ? I have seen cars blow oil out when the PCV is clogged .

IndyFarmBoy · Nov 8, 2022

I've spent a lot of time on 285s, they were both so leaky I couldn't begin to tell you what your leak is for certain. It kind of sounds like valve cover gasket,
I'm pretty sure both of ours had leaky valve cover gaskets. They were also prone to diesel leaks, pretty much everywhere it seemed, but they never leaked bad
enough to need to park long enough to repair. Although it needs the fuel tank sealed up now. They function as the big horses on our farm, they are heavy built and
pull like freight trains and seem to get real good traction, but are nimble enough to be excellent with a 7ft bush hog, a wagon, or a hay rake. Love the 8 speed
trans, do not love the Multi Power at all. Powerwashing with degreaser would be my first move as well. Hope you can fix it pretty easily. I always thought it
would be nice to look at that tractor and not think i wonder if imma have to put oil in it.

JMOR · Nov 8, 2022

(quoted from post at 12:43:54 11/08/22) I've spent a lot of time on 285s, they were both so leaky I couldn't begin to tell you what your leak is for certain. It kind of sounds like valve cover gasket,
I'm pretty sure both of ours had leaky valve cover gaskets. They were also prone to diesel leaks, pretty much everywhere it seemed, but they never leaked bad
enough to need to park long enough to repair. Although it needs the fuel tank sealed up now. They function as the big horses on our farm, they are heavy built and
pull like freight trains and seem to get real good traction, but are nimble enough to be excellent with a 7ft bush hog, a wagon, or a hay rake. Love the 8 speed
trans, do not love the Multi Power at all. Powerwashing with degreaser would be my first move as well. Hope you can fix it pretty easily. I always thought it
would be nice to look at that tractor and not think i wonder if imma have to put oil in it.

o blowing sand under where we park the 275 either. I suspect some air cleaner oil might be blow-back due to leaky intake valves. Diesel & oil?

Dandale1971 · Nov 21, 2022

It doesnt appear to be leaking oil from anywhere but in the middle bottom of the air intake manifold. Does this tractor have a pcv valve? Can there be something causing blowback?

Massey Ferguson 285 oil in air intake

Dandale1971

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Janicholson

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Michael Soldan

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IndyFarmBoy

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JMOR

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Dandale1971

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