Blow by on engine

[j.myatt]

Hey all, im up to my 4th Fordson now. I brought 2 power majors both siezed. The first one i managed to free up by pouring diesel into the cylinders and rocking the engine until it freed up. The sump was full of water and slop luckily it was an engine with a removal oil screen!!

Cleaned out sump and best i could and cleaned screen. New oil and fired her up. I cracked oil line and had pressure (unknown what psi) Engine runs smoothly no knocking.

Except one cylinder has blow by (looks sort of like a leaking injector mist coming up the push rods (just one cylinder).

The previous owner said he was slashing with the tractor and it siezed so he just left it. The area had a major flood 3 years prior so im not sure if the water in the sump is from that or rain or other reasons.

Question is how much blow by is ok or should i just give it a good working? After running the engine stationary for a few minutes the water level stayed the same and oil the same, no bubbles in radiator and after a month water level is the same..

Thoughts?

PS the cylinder in question is above the screen panel on the sump has anyone removed a piston by removing the head and undoing the big end bearing cap ia the panel? Dont want to split the tractor

[Brian]

If she has been hot you may have seized rings on that piston. The piston may have "picked up", semi seized, and scored the side of it jamming the rings.

No problem taking the head off, sump off and drawing the piston through the top, it was the way we used to re-sleeve engines when the crank and bearings were OK, without taking them out of the tractor. Remove the wishbone and track rod and off you go.