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Leaking Head Gasket?

head gasket

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#1 FilledTires OFFLINE  

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Posted May 04, 2014 - 04:16 PM

Hi everyone,

 

I recently build a Ford LGT 145 with a Front End Loader.

 

I was adjusting the carb, and RPM speed today and noticed hot air coming out of top of the engine in between the Cylinder Head, and the rest of the engine block towards the muffler end of the engine.

I am assuming this is not normal, correct?

 

Hot air, exhaust, smoke, etc, should only be coming out of the muffler right?

 

Does this mean a Head Gasket needs to be replaced or possibly valves, etc?

 

Thanks for your help!

 

-Norman



#2 JDBrian OFFLINE  

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Posted May 04, 2014 - 04:25 PM

Best to see if you can determine exactly where the hot air is coming from. If it's not normal cooling airflow then it could be the HG. If it's leaking that bad I would think the engine would not run well at all. You could start by re torquing the head bolts to see if they are loose. If that doesn't fix it then you need to replace the HG. The Kohler K series service manual is a good resource to have on hand. You can download it from our manuals section or from the Kohler web site. 

Here is a link to a topic where I had a HG problem with a K321 in a JD314. It turned out not to be the only problem but it will give you a look at what a HG replacement job looks like. The HG is still fine in that engine and it runs pretty well.  http://gardentractor...?hl= oily mess


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#3 FilledTires OFFLINE  

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Posted May 04, 2014 - 04:29 PM

Thank you for the link! I will read it thoroughly!



#4 LilysDad OFFLINE  

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Posted May 04, 2014 - 07:44 PM

What JD said. :thumbs:  There is air from the flywheel that is guided over the cooling fins and comes out on the PTO side of the engine. If it's coming out anywhere else, it's not normal.


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#5 FilledTires OFFLINE  

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Posted May 04, 2014 - 09:52 PM

Oh I see.

 

So those fins on top of the cylinder head is suppose to have air rushing between the fins? I take it, that's how the engine is cooled. That must be the air I am feeling, and that must be normal.

 

If my head gasket was leaking tons of air, I wouldn't have compression, and thus the engine would not be running well at all, like JD said.

 

Is my thinking accurate on this?

 

Thanks for your answers.


Edited by normanng, May 04, 2014 - 09:53 PM.






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