755 Blowing Anti-freeze Out the Overflow

[RWEST]

My brother replaced the radiator cap on his 755 (he said the old one "looked funny" ) with an OEM cap. Since then, he says he's getting anti-freeze out the overflow when he runs the engine at higher RPM's. Whaddya' think - head gasket?
TIA.

 

[kennyd]

Head gasket if your lucky, cracked head if your not...you/he needs to do a compression test ASAP.

 

[Ken Cunningham]

Was it doing this before the cap replacement? If not put the old one back on a see it it still does it. Maybe he got a defective cap that is not holding pressure.

 

[RWEST]

Was it doing this before the cap replacement? If not put the old one back on a see it it still does it. Maybe he got a defective cap that is not holding pressure.

Nope. He threw the old cap away, so we're going to try the one from my 955 - according to the J-D catalog, they're the same, he says. I'll let you know what happens.