Massey 240 making oil!!!

[JWR]

The reason I think that is the oil is to the top of crankcase dip stick like there is a couple gallons of extra oil in there. It has 1500 hrs on it. With that much blow by wouldn’t it be hard to start? I’m sure it has some with its age but that doesn’t explain the crankcase being over full of oil it should not have any oil in it right. Thank you for taking the time to answer.

Yes, I see your point. With the engine not even running and the oil level way high by dip stick then it can't be blowby.

 

[andyk3]

Is your transmission low on oil? Does the engine oil look runny and smell like diesel fuel? On some models of tractors the fuel pump can leak diesel fuel into the oil if a seal fails?

Wanted to tell you thank you so much! Went and checked and yes it must be the seal in the fuel pump. Filled it up when I got it have probably ran it 15 minutes and there is only 2 inches of fuel left in it. Even if it’s not got to sell it can’t afford the fuel lol. Again thank you I would have never thought of this.

 

[andyk3]

Hello, I just purchased a mf240 my first tractor. It is a 1988 model I think, it has a aftermarket fel I think because it’s green. It was fine for about two weeks but now I think the transmission oil is going into the crank case because it is blowing a lot of oil out the oil fill tube and the tube coming from the top of engine. You turn the key and it starts right up. The dip stick on the crankcase showed oil all the way to the top. I’m no where close to a diesel mechanic so how is the oil getting into the crankcase?

THANK YOU ALL FOR BEING SO INFORMATIVE I WAS AT A LOSS AND ALL YA’ll (yep I’m from GA) GAVE ME GREAT THINGS TO CHECK TO FIGURE IT OUT!

 

[oldnslo]

Wanted to tell you thank you so much! Went and checked and yes it must be the seal in the fuel pump. Filled it up when I got it have probably ran it 15 minutes and there is only 2 inches of fuel left in it. Even if it’s not got to sell it can’t afford the fuel lol. Again thank you I would have never thought of this.

I would suggest following the fuel line from the bottom of the fuel tank. That model may or may not have a mechanical lift pump that could have a diaphragm that fails. The lift pump would then supply fuel to the main injector pump.

Hopefully someone that knows that model will chime in and provide some insight.

 

[thepumpguysc]

There’s 2 places fuel can get into the oil..
1) from the lift/supply pump.
Only remedy is replacement.
2) front seal in the injection pump.. it requires injection pump removal.

I’m doing a J.Deere for the same problem..
Customer wants to replace supply pump 1st.
What I’m going to do is turn off the fuel.
Drain the oil.
Replace the filter and the supply pump..
Leave the oil drain plug out..
Put a few gallons of fuel in the tank.(3?)
Put a clean pan under the tractor that will hold about 3 gallons of fuel.
Turn the fuel back on and check it in the AM..
If it has about 3 gallons of fuel in the pan, I gotta pull the inj pump and repair it.

 

[RayIN]

Faulty injector leaking fuel into cylinder. Fuel is so thin it easily passes the oil rings and drains into the crankcase.

 

[andyk3]

There’s 2 places fuel can get into the oil..
1) from the lift/supply pump.
Only remedy is replacement.
2) front seal in the injection pump.. it requires injection pump removal.

I’m doing a J.Deere for the same problem..
Customer wants to replace supply pump 1st.
What I’m going to do is turn off the fuel.
Drain the oil.
Replace the filter and the supply pump..
Leave the oil drain plug out..
Put a few gallons of fuel in the tank.(3?)
Put a clean pan under the tractor that will hold about 3 gallons of fuel.
Turn the fuel back on and check it in the AM..
If it has about 3 gallons of fuel in the pan, I gotta pull the inj pump and repair it.

Thank you and sounds like a plan I can do.

 

[Little Red Tractor]

How many hours on it?

I doubt that the transmission oil is going into the crankcase. (Did you have some reason to think that?) The symptom you describe (blowing a lot of oil out the oil fill tube and the tube coming from the top of engine) is probably a serious issue. My first guess is that what you have is blow-by with combustion pressure leaking into the crankcase. That is a common thing when the rings/pistons/cylinder walls get worn badly enough that they no longer hold back the combustion pressure which then pressurizes your crankcase which then puts oil all over the place.

I'm not saying that is it but I will take bets. [Editing: Roadworthy got his comment posted while I was still typing mine. He might be right about it being an hydraulic pump leak since that WOULD put transmission fluid/oil into your crankcase.] You need to get the compression tested for each cylinder. Any mechanical shop can do that and it is not a big deal. The compression in each cylinder should be ballpark the same. The amount of compression is specified in the shop manual for your engine (my wild guess is like 170 psi but ignore that and get it looked up in the specs for your engine.)

If any cylinder is a lot lower than the rest then you know the rings/piston/cylinder wear in that cylinder are bad. If more than one is much lower than the specification pressure you know you have excessive wear. IF THESE THINGS SHOW on a compression test you are really face with an "engine overhaul" which involves new rings, teardown of the engine, putting new bearings in while you are in there, etc.

NOW, all that said if you are incredibly lucky (and I am wrong about it being cylinder blow-by) you might conceivably have crankcase gas recirculation ventilation plumbing plugged up or who knows. Have that checked before you do the combustion pressure test of course because cleaning out the tubing is far easier/cheaper than doing the compression tests. If you do not do your own engine work, go find a mechanic and get him to diagnose the problem.

Best of luck.

That sounds more likely to me as well. Before you start tearing it down, you may want to find someone who can do a test on the crankcase oil. I agree that running it will likely cause catastrophic failure...sooner than later.

 

[JsJs]

Check your rad for anti freeze level. If its down, the head gasket could be failing and fillling the oil pan

 

[Portuguese Farmer]

Fuel or coolant.