Massey Ferguson 255 Blow by

KyleA

New User
I have a Massey Ferguson 255 with the Perkins ad4.203
It has started lately with a ton of blow by. The oil does not seem to have anti freeze or fuel in it and it s not losing coolant either. Any idea what could cause this? The tractor starts, idles and runs 100% and never misses a beat. Blow by is only when the engine is working under load.
 
My late 65 diesel (same engine) had excessive blow by when I bought it. Turned out to be the head gasket blown between number 2 cylinder and where the oil drains down from the rocker arms.
 

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