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Engine oil out the breather tube

M

M Nut

Well-known Member
Have a Timber Jack 205 log skidder that I use during the winter months. It has a Ford diesel motor, was told the same one that is in a Fordson Super Major tractor. Brother was using it last spring and the engine lost almost all power and started dumping oil out the breather tube. Quite a bit of oil. He shut it down right away, and it has sat since. I figured a hole in a piston. Pulled the motor out and opened it up this weekend, and all pistons looked fine. Everything else internally looked fine too. Any ideas as to where I should look next? I never knew it had a decompression on it, but I found a lever that appears to be just that. If that could have somehow gotten moved to the decompress position would that have caused it to puke the engine oil out?
Thinking about rebuilding anyway since the engine is out, so any good places to get a rebuild kit and a clutch for this machine? Timberjack dealer has parts, but they are "proud" of their stuff. Would like to find someplace cheaper if possible.
 
"engine lost almost all power and started dumping oil out the breather tube."

Do you mean the crankcase breather tube, or the air cleaner intake, which some folks call the "air breather"?
 
I agree with other posts. Need to know what and how much was drained from oil pan. Overfull because of fuel or hyd oil will cause your problem. As for parts they should be available aftermarket. A&I lists overhaul kit for Fordson Super Major in the $600 range. Other vendors should also have them. Good luck
 
An engine puking oil can often come from a hole in a piston like you said but you say this wasn"t the case when you got it opened up. Like other posts have stated fuel oil or hydraulic oil either leaking into and overfilling the crankcase can also cause an engine to puke. In this case you don"t say anything about the oil level being massivly overfull or anything so I"m assuming that"s not the problem either. Too a decompression lever being "engaged" won"t cause the problem.

With all that said the only other thing I know of that will cause an engine to "puke" is an excessive amount of blowby past the rings. This can happen from them being broke, glazed, or just plain worn out. The broken once and the razor thin worn out ones are easily spotted. But a set that has glazed over for some reason and just quit sealing aren"t gonna jump out at you like the others will.

Wish there was something a little more definate to give as a cause but given the information at hand and what you"ve observed so far, that"s about all I can think of.......Unfortunately there are sometimes just mysterious problems that have no good explination.
 
Check for clogged fuel/air filters and a totally plugged crankcase breather.

When an engine develops a hole in a piston, that cylinder then acts as a syphon rather than a pump. If it wasn’t ‘fogging’ smoke out the exhaust, then like you say, the engine is not the culprit.

Works backwards from what a guy would think.

Allan
 
Does that motor use a Simms injection pump??? They can develope an internal leak that will fill the oil pan with diesel fuel very quickly. An injection pump failure could have caused the power loss and oil overflow.
 
Thanks for the replies so far. I checked oil right after it happened and it was low, to the point of not registering on the dipstick. Guess I"ll just rebuild it while it is out, and hope I can figure out the cause during the rebuild process.
 
and to add to that, diesel also glazes the cyl. walls and that causes the engine to use oil and cause blowby.
 
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