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345 Antifreeze Leak


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#1 Username OFFLINE  

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Posted June 05, 2013 - 09:08 AM

I have a 345 that pukes antifreeze out the exhaust.I have had this tractor for over a year now and when I first got it,from time to time it would pull a streak where the exhaust would turn white from antifreeze for about a minute and then it would clear up but it has been getting worse and the left plug is always the wet one.I pulled the head and I can't see anything wrong.I never noticed any antifreeze in the oil in the past but this time there is some in the oil.Anyone have any ideas on the problem?

 



#2 JDBrian OFFLINE  

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Posted June 05, 2013 - 10:51 AM

I hope the block isn't cracked. Has it been overheating or perhaps it was overheated before you got it. The obvious culprit would be the Head gasket.


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#3 Arti OFFLINE  

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Posted June 05, 2013 - 05:16 PM

I would have the head checked at a motor repair shop. they can find cracks with a magnet and iron filings, I believe it's called magnafluxing.


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#4 Username OFFLINE  

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Posted June 05, 2013 - 06:44 PM

I never had an over heating problem and the problem has gotten progressively worse.I am leaning towards a cracked head and I am considering just replacing the head.



#5 John@Reliable OFFLINE  

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Posted June 05, 2013 - 06:50 PM

Like the others have said, only a few possibilities. Cracked engine block, cracked head or hopefully just a bad head gasket. I would replace head gasket and if that didn't work, add some sealant and hope for the best.

 

P.S. Below is a link to a detection kit,

http://www.cylinderh...m/skpokit1.html


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#6 Username OFFLINE  

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Posted June 05, 2013 - 07:00 PM

I think it would have to get past the fire ring on the head gasket to get in the cylinder if it were a head gasket and I don't see any signs of that.One other place is the intake manifold as it has a cross flow port for the coolant but it looks good.



#7 olcowhand OFFLINE  

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Posted June 05, 2013 - 07:10 PM

I would have the head checked at a motor repair shop. they can find cracks with a magnet and iron filings, I believe it's called magnafluxing.

 

Yep, magnifluxing is correct, and it'll find cracks you'll never see with the largest magnifying glass!  


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#8 Amigatec OFFLINE  

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Posted June 05, 2013 - 07:35 PM

Does it build pressure in the radiator? What motor does it have?
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#9 olcowhand OFFLINE  

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Posted June 05, 2013 - 09:01 PM

Does it build pressure in the radiator? What motor does it have?

 

That is right, if no pressure buildup, then I would "think" the crack would have to be between the water jacket & the exhaust outlet.  


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#10 Username OFFLINE  

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Posted June 06, 2013 - 10:02 AM

It has an FD590 18 HP Kawasaki.I never noticed excessive pressure in the radiator.



#11 WNYTractorTinkerer OFFLINE  

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Posted June 06, 2013 - 10:21 AM

If you are getting AF in the cylinders it will wash the spark plug like new-  Pull and inspect them..  Inspect any cylinder with a clean one..  I'd at least pull and change the head gasket on that cylinder and watch it..   If neither plug is washed then it is a crack in a head to the exhaust port..  You should be able to spot a difference once you remove the muffler to look..  If not inspect both heads..


Edited by WNYTractorTinkerer, June 06, 2013 - 10:23 AM.


#12 Mrfixit8 OFFLINE  

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Posted August 13, 2013 - 08:57 PM

Did you ever find the problem and the remedy?  I found your post while searching out the same problem.  I have pulled the heads and they appear to be fine, as do the head gaskets.  I am having the heads sent out to a machine shop for magnifluxing. The one thing that peaks my interest is the intake.  My muffler had a lot of coolant in it.  Thanks in advance.






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