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Farmall 100 head gasket question

A

Anonymous-0

Well-known Member
I'm sure this question has been asked on here many times, but because of the amount of smoke at start up- particularly when I engage my belly mower, I suspect I might have a leaky head gasket or something else. The smoke stops after the engine warms up. I can't detect any coolant in my oil or vice versa, and I am not losing much fluid at all of either. How can I know if I have a leaky head gasket or cracked block or something else? Also, the engine seems to run fine and I mow for 2 or 3 hours with it- do I really need to worry about it unless something gets worse? Thanks
 
I shouldn't worry about it too muc, as you describe it. Sounds mostly like a motor that's been worked hard, might be a little tired but nothing out of the norm. A bad head gasket/ cracked head or block, at least as far as fluids are concerned, would show up as oil in the coolant or (more likely) water/coolant in the oil pan. If you're running it regularly (and it sounds as if you are) and those are not problems, then neither is your head gasket.

The earlier suggestion of worn valve guides allowing oil to get by around the valve stems until the engine warms up would be a good bet.

Bottom line . . .in the absence of fluids where they shouldn't be, and with even compression across the cylinders, she'ds good to run. With a lot more running, she might need attention some day.
 
Ditto to what Scotty and Tyler said. I have a BN that smokes a bit on start up, and as soon as it warms up, no more smoke. In addition to worn valve guides, sticky rings can also cause the same behavior.

However, I fully agree the other's that if things are as you state, you are good to go. Just check the oil at each startup to make sure you are up full.
 
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