D10 water mist spraying out of cyl 2 spark plug ho

All of you were wonderful and so helpful 8 years ago , then again in 2025, in keeping my lovely old Allis out and working. Please tell me your thoughts again;  Thanks Albert                    Last year it overheated ; As you suggested I had the head resurfaced, put in a new gasket and then  added a little copper sealant to coolant when it might have been leaking a bit later ..Perfect ran cool and happy until winter put away. In May She fired up and ran perfectly until September.  Then on a start up she would only crank and a few sputters of white and black smoke. I checked the oil...milky, I check the plugs and some water came out of # 2 and 3 and 4 seemed a bit wet, Drained the oil and 2 qts of clear water came out  first. Pulled the head and traces of rust on a couple of the piston heads. polished the block and head surfaces , installed a new gasket, torqued it 85 in sequence.  Fresh oil and filter .  With plugs out # 2 is spitting out a watery mist. The others are dry.                                         Please Help again I have so many trees snapped off half way or with root balls facing up , big limbs on the ground.   Ive been cutting all summer and need my best girl helping.  Thanks to all of you again and akain ; Albert

Hi PaulB I have a feeling it was you and a couple of other saints in the Forum that rescued me a number oy years back. Thank you now for such a quick reply and getting me off to research what's involved  and the parts .  Thanks again I'll check back , if you don't mind, and let you know my progress; Albert

A little easier for some things maybe with engine out but not that necessary. Drop pan,pull head,unbolt rod and push out. Sleeve will likely be stuck but a hard block of wood and big hammer will knock it loose. Cleaning the block bore really good is the time consumer. You really need to know where the leak is before trying to fix it. That's why you drop pan and pressurize system and look for leak. If it's running down the sleeve from the block it probably is an oring but you could have a cracked lower web bore and there is no economical fix. You replace. You don't need to mess with crankshaft at all.

Edited by SteveM C/IL - Yesterday at 1:42pm

you could pull the head off and take a look at the gasket and the sleeve... you could pull the oil pan and see if the antifreeze is running down between the liner and block thru the o-ring.... But pulling the sleeve and liner is going to get complicated and more involved than you think by the time you clean every thing, wire brush, get new parts, etc... and traveling 500 miles back and forth a few times will get old.... Consider borrowing a trailer and bring it home ... then if you do need an overhaul, pull the engine out and do it the easy way..

If it get into worst case scenario, I have good blocks and heads for the 138/149 engines.

Was this tractor parked inside or outside. You mentioned clean water. Did it have anti freeze in it? Just curious. Tracy

Les thanks I'll print this and take it to a friend's garage in the morning You have all been such reassuring help I'll stay in touch with hopeful news The best Albert

Thank you Steve   I'll be sure to follow you advice too    On a Joyful note today a friend and mechanic that I called to borrow his cyl pressure tester and a fitting  to pressure the cyl with air via the plug hole unexpectedly  pulled up in front of the barn with his rollback and took my Allis to the front of his work bay and said he would guide me through every step of the way ..even if I have to replace the sleeve. Tomorrow I start a sequence in order of steps the forum advised and post my gratitude to you all one way or the other .  God I had day!!!!  I image you and all the others on the forum don't have a parking meter any where near you. And like are surrounded by neighbours that look forward to being great ones.  Thank you Albert

Thank you Steve for all your time and advice I'm printing out all the advised approaches to start them logically tomorrow    and this good news happened today                                               On a Joyful note today a friend and mechanic that I called to borrow his cyl pressure tester and a fitting  to pressure the cyl with air via the plug hole unexpectedly  pulled up in front of the barn with his rollback and took my Allis to the front of his work bay and said he would guide me through every step of the way ..even if I have to replace the sleeve. Tomorrow I start a sequence in order of steps the forum advised and post my gratitude to you all one way or the other .  God I had day!!!!  I image you and all the others on the forum don't have a parking meter any where near you. And like are surrounded by neighbours that look forward to being great ones.  Thank you Albert

let us know how it goes