engine seized or hydraulic lock?

[s219]

How did you add oil to the engine?? They all have multiple fill ports, and normally you should be using the lower (often harder to reach) fill port. I believe there are cases where if you add oil through the top port (valve cover) it can pool there and it's possible that it eventually trickled into a cylinder after the tractor was shut off (maybe through a worn valve guide for example). That sounds crazy, but I am pretty sure I remember hearing about that exact issue here on TBN.

So yeah, I'd pull a glow plug or injector, whatever is easier, from each cylinder, and see if that allows the engine to crank by hand and shoot some oil out of the hole. Then check the oil level and top off the engine with one of the lower fill ports that more directly sends oil down to the sump pan. Make sure it turns over by hand, then turn over with starter (with plugs/injectors still removed). Button everything up and try to start the motor. Good luck!

 

[s219]

By the way, I am not liking the idea of electrical problems mainly because you said the engine will not crank over by hand. That is a significant clue.

 

[BigBoyToys]

How did you add oil to the engine?? They all have multiple fill ports, and normally you should be using the lower (often harder to reach) fill port.

Curious as to what "lower" fill port there is for the engine.
I recently changed mine and added oil through the "Oil Fill Port" on the valve cover. That's how it's shown in the Owners Manual and the WSM.

 

[s219]

These engines have multiple uses/applications, and they will almost always have more than one fill port to accommodate different installations and orientations. Usually one of them is called out as the preferred place to add oil.

As far as I know, all are OK, however if you use the one on the top of the engine you have to fill more slowly, since it can easily pool or overflow. If that happens, oil can flow into the breather and get into the intake and engine -or- if valve guides are worn or there is another path, the oil can get down into the engine.

 

[CCWKen]

Yeah, I remember that discussion too. I think it was on a new or newer tractor too. As I recall, it tanked the engine and the owner was having problems getting it fixed by the dealer. I think it had something to do with the oil not flowing through the head fast enough and back flowing through some pollution control port into the intake or some such weird nonsense. The owner blamed the design and dealer blamed the owner. I don't remember the outcome.

 

[Avondale]

The oil fill discussion was also on the Kioti board, same problem with two fill ports.

 

[ovrszd]

I've tried to avoid responding to this..... But I'm a failure.......

If your engine holds the oil in the valve cover to the point that it seeps past your valve guides and hydro locks,,,, how does it survive running for several hours at a time without pumping and pooling all the oil in the valve cover and starving the oil pump and your crank bearings?????

Sorry,,,,, just had to ask...... :confused3:

 

[4570Man]

How did you try to crank the engine by hand. They are pretty hard to turn over.

 

[ovrszd]

How did you try to crank the engine by hand. They are pretty hard to turn over.

Yep, thats why I suggested putting the tractor in high gear and rocking it. Takes a pretty long wrench on the crankshaft nut to turn an engine.

Since we've heard no followup I'm guessing problem has been solved.

 

[CCWKen]

I've tried to avoid responding to this..... But I'm a failure.......

If your engine holds the oil in the valve cover to the point that it seeps past your valve guides and hydro locks,,,, how does it survive running for several hours at a time without pumping and pooling all the oil in the valve cover and starving the oil pump and your crank bearings?????

Because many engines don't have valve stem seals or they use "umbrella cups" which only protects against oil splashed off the rocker arm. The valve guide may only extend 1/2" above the head so flooding the area with oil causes the valve guides to be submerged in oil. Under normal running conditions, oil just dribbles off the rocker arms in small amounts and runs down the push rod holes or oil drains.

And then, there's the case(s) mentioned above where oil may go directly to the intake ports because of some strange design.

My old JD420C has a baffle in the filler tube. If you try to add oil too fast, it back flows all over the top of the engine.