Oil Spewing Out of Crankcase Filter

[Flex4]

I recently changed my engine oil, (approx. 3 weeks ago) on my Jinma 284, and have not really used my tractor since then. I just noticed 3 days ago when I was about to use it that when I increased my RPMs to where the tach hit the green area a large amount of oil began to spew out the bottom of my crankcase filter. I checked my oil and it appears that there may be a little too much oil. Is this common that this is the first indicator that there is too much oil in the engine or is a sign of some other issue/s?

I know this may be a dumb question, but I followed the specs and put in the exact amount of oil that was recommended, but it appears those specs were off. If I'm doing something else wrong can someone please let me know?

Thank you,

Peter

 

[Bob Rooks]

It's my understanding that there may be more than one brand of engine used in that tractor, hence the discrepancy. Use the marking on the dipstick.
Putting in too much oil will cause it to come in contact with the crankshaft which aside from throwing it out the breather, will cause it to aerate (not good). Also you will be flooding the front & rear crankshaft seals, which they are not designed to do, and could migrate engine oil into the clutch housing (also not good).

 

[greg_g]

That issue of two different capacities pretty much went away with the Y385 engine - about 2007 I think. Yes, your issue sounds like an overfill, but it's not necessarily all oil. Yes, you might have counted wrong when you poured the fresh oil in. But the excess just as easily could be hydraulic fluid, diesel fuel, or coolant.

Open the radiator cap, check the level. The level should completely cover the core. If the coolant level is high enough to see, look for black stuff floating on the surface. If you can reach far enough in, the stuff will stick to your finger. If all that looks ok, then start the engine and look again into the filler neck for signs of bubbling.

If all that looks ok, try the steering and rear lift - then shut off the engine. Lower the hydraulics, then check the hydraulic fluid level.

If all that's ok, get a clear container in which to drain a couple quarts of engine oil. Let it settle for half a day, see if it separates into layers. If yes, then next job is to determine if the extra layer is hydraulic fluid or coolant or diesel fuel.

If you don't want to go through all that, consider that you just miscounted how many quarts you put back in. Drain it all back out. If it looks new/clean/uncontaminated, use a measuring container to pour back in the amount specified in your engine manual

//greg//

 

[Flex4]

Well Greg I don't have any black stuff in the radiator fluid, I just changed the radiator fluid, changed and topped off the hydraulics, but it now makes sense as to why I'm losing fuel. I topped off my tank 3 days ago and have not driven it since, but I checked it today and it's down to half a tank.

Ok what's the next step Gregg and where is the leak, this is driving me nuts? It just seems like it's one thing after another. I hope this is not a major rehaul.

I'm frustrated, I actually hav'nt even had a chance to work on this tractor yet since I bought it.

Thank you for your help guys.

Peter

 

[Turbo]

Bob funny you would say that about the dip stick. I had a customer that bought a piper cub with a, continental a-65 engine in it. well he called me asking if he could put car oil in his airplane that he had just left the airport and flue to his farm 30-40 mile away, on his way the oil pressure was fluctuating, and when he check it, there was no oil or very little in the sump, and he couldn't understand where the oil had gone. when he checked it at the airport the stick read 4 qt. well to make a long story short, the other owner had used a dip stick out of a cont. 0-200 which was longer and bing a flat stick it would curve with the round sump and lay close to the bottom. with the airplane siting on it's tail the stick read 4 Qts, but in reality it had 1-2 qts if that, and in level flight it would starve the engine of oil. needles to say but his engine had to be overhauled.
So using you dip stick to fill the sump may not be a good practice, use the manual, fill the sump and then check the stick accuracy.

 

[Rich Waugh]

Peter,

It sounds as though your fuel is getting into the engine sump. The most likely source of that is the injector pump seals, I'd guess. That is going to mean pulling off the injector pump and checking it out and then replacing the seals and gaskets and re-installing if the pump itself is okay.

One of the dealers will probably chime in here with better information than this, but that's my best guess. Don't know where else it could come from unless you have an injector drooling a huge amount of fuel and that should show up in the form of exhaust smoke, I think.

Rich

 

[Flex4]

Thank you Rich for the info. FYI there is very little exaust smoke, except for the usual smoke when it start off cold. I was aslo remembering what Gregg had asked about black stuff in the radiator. I had a very small amount of black residue in the radiator but, i am not loseing any radiator fluids at all and it does start to flow after it reaches normal operating temp.

 

[Bob Rooks]

Bob funny you would say that about the dip stick. I had a customer that bought a piper cub with a, continental a-65 engine in it. well he called me asking if he could put car oil in his airplane that he had just left the airport and flue to his farm 30-40 mile away, on his way the oil pressure was fluctuating, and when he check it, there was no oil or very little in the sump, and he couldn't understand where the oil had gone. when he checked it at the airport the stick read 4 qt. well to make a long story short, the other owner had used a dip stick out of a cont. 0-200 which was longer and bing a flat stick it would curve with the round sump and lay close to the bottom. with the airplane siting on it's tail the stick read 4 Qts, but in reality it had 1-2 qts if that, and in level flight it would starve the engine of oil. needles to say but his engine had to be overhauled.
So using you dip stick to fill the sump may not be a good practice, use the manual, fill the sump and then check the stick accuracy.

Okay, you win. But how often do unscrupulous people swap dipsticks?

 

[Bob Rooks]

Peter,

It sounds as though your fuel is getting into the engine sump. The most likely source of that is the injector pump seals, I'd guess. That is going to mean pulling off the injector pump and checking it out and then replacing the seals and gaskets and re-installing if the pump itself is okay.

One of the dealers will probably chime in here with better information than this, but that's my best guess. Don't know where else it could come from unless you have an injector drooling a huge amount of fuel and that should show up in the form of exhaust smoke, I think.

Rich

Sorry Rich,
No seals in the fuel injecton pump, they are sealed by lap-fit tolerance only. But you could be half correct - there is a seal on the lift pump push rod. Ten minute job.

 

[greg_g]

I was aslo remembering what Gregg had asked about black stuff in the radiator. I had a very small amount of black residue in the radiator but, i am not loseing any radiator fluids at all and it does start to flow after it reaches normal operating temp.

If you just changed the coolant, it takes a while for the black stuff to accumulate again. Not saying this is the problem, but black stuff floating on the coolant is usually soot and oil. And it's usually from a failing head gasket. If you remove the valve cover and discover a lot of creamy/whitish-yellow oil clinging to stuff, that's another sign of head gasket problems.

If I recall, the fuel tank holds 6 gallons, and I don't believe there's any way the oil pan could hold that much missing fuel. Ain't no way a leaky injector is going to drip 3 gallons past rings either. This sounds like a separate issue. But assuming that you have a normal sense of smell and normal eyesight, it shouldn't be hard to track down a smelly spot that might represent 3 gallons of diesel.

I think it's time to drain the engine oil and see how it settles out. Like I said before, if you end you end up with two layers - the next job is to determine what the mystery layer is; coolant or fuel or hydraulic fluid.

//greg//