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Re: IH 340 head gasket

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02-28-2014 19:32:20

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Thanks Ed! I was just seeing if anyone had seen it help or if anyone had known the head bolts to loosen up over time.
As for the severity of the leak, I knew it had been seeping externally for some time, but didn't worry about it. I just ran it with the radiator cap loose so it didn;t pressurize the system. Today, when I was moving snow, I foolishly tigthened the cap. After a little while, I had engine misfire, white smoke out the exhaust, and steam coming out from under the head on both sides of the block! It appears there's only about a quart or two of coolant in the oil. Am I going to end up buying bearings for it too?

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02-28-2014 20:32:22

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 Re: IH 340 head gasket in reply to DanL1958, 02-28-2014 19:32:20  
If you run it you will sure ruin it.
Tightening that head will not "cure" the issue. Retorqueing several hundred hours ago might have helped but not now. If you have operated it for several hours overheating, or with coolant in the sump, it well may need bearings and a turned crank.
If it was quiet, and not much time spent operating with coolant as lubricant, it might be OK with a head gasket. Jim

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02-28-2014 20:28:46

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 Re: IH 340 head gasket in reply to DanL1958, 02-28-2014 19:32:20  
gasket is blown! pull head. only quart or two of coolant in oil... that is way too much. pickup screen is on bottom of pan coolant is on bottom of pan. not good. is this gas or diesel engine? sounds like a diesel as they do have head gasket problems as all those diesels do of that design. head has to come off so may as well pull pan and check brgs. then you know what you have.

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