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  #1  
Old 04-13-2013, 11:55 PM
ToledoDan ToledoDan is offline
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Need Help - Kohler Engine on Exmark 60" mower

Have a Kohler CH25-68606 engine in a ExMark 60" Mower that is blowing oil out of the dip stick tube. I have engine repair exp. just not on Kohlers.

Could anyone point me in the right direction for root cause and repair?

I was thinking rings or head gasket but before I tear into it want to ensure its not a common problem with this engine and something simple...

Thanks guys
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Old 04-14-2013, 10:57 AM
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piston slapper piston slapper is offline
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Check your oil level...too much might blow out the tube...
If the dipstick or oil cap is removed while the engine is running...they all blow out oil..
This causes an immediate loss of crankcase vacuum...resulting in crankcase pressure..
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Old 04-14-2013, 12:38 PM
ToledoDan ToledoDan is offline
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Quote:
Originally Posted by piston slapper View Post
Check your oil level...too much might blow out the tube...
If the dipstick or oil cap is removed while the engine is running...they all blow out oil..
This causes an immediate loss of crankcase vacuum...resulting in crankcase pressure..


Oil level is at the proper level. Checked the PCV valve its not plugged... At high RPM it will blow oil out the dipstick especially if the engine is under load.

Any ideas or ways to confirm my issue on these kolhers?
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Old 04-14-2013, 12:50 PM
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piston slapper piston slapper is offline
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You dont have a pcv valve..you have a reed valve that vents thru a hose to the carb..
How much oil is getting pumped into the carb.?? Is the hose kinked or broken.??
The reed is atop the engine under the plate with 4 bolts...it might be broken...
Are your sparkplugs fouling.????...might just be a leaky dipstick...they do go bad...
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Old 04-14-2013, 02:20 PM
Oldtimer Oldtimer is offline
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Blown head gasket? Schools have crankcase vacuum instead of pressure.
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Old 04-14-2013, 05:51 PM
ToledoDan ToledoDan is offline
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Quote:
Originally Posted by piston slapper View Post
You dont have a pcv valve..you have a reed valve that vents thru a hose to the carb..
How much oil is getting pumped into the carb.?? Is the hose kinked or broken.??

Pulled cover and reed looks good and hose is clear and not kinked or broken. No oil in carb but oil running out of reed valve cover and hose when running.

Any other ideas or hints?

Spark plugs both have some fouling black so oil I am assuming.

The reed is atop the engine under the plate with 4 bolts...it might be broken...
Are your sparkplugs fouling.????...might just be a leaky dipstick...they do go bad...
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Old 04-14-2013, 06:46 PM
Oldtimer Oldtimer is offline
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Kohler engines should have crankcase vacuum instead of pressure.


Oldtimer
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Old 04-16-2013, 10:31 AM
ToledoDan ToledoDan is offline
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Donít have a monometer to test it, however when I feel the breather tube it doesnít seem to have an excessive amount of air.

Also found out some history about the machine, it had new head gaskets installed on both side professionally about 2 hours ago according to the meter and paperwork.

The guy that had it before me, had that work done. Called the repair place and the owner said that the oil coming out of the breather tube was the reason why the previous owner brought it in. He said he replaced the head gaskets and main seals and ran it and it seemed to be fine.

Asked the previous owner and he said it seemed to be ok for an hour or so and then started pump oil out of the breather again and after the repair services 2300 dollar repair bill he sold it to me... Lucky me...

Any ideas guys?
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Old 04-16-2013, 11:00 AM
Oldtimer Oldtimer is offline
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Could have replaced the engine for less than that.

I will talk to one of my techs & get back with you.

Oldtimer
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Old 04-16-2013, 11:02 AM
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Did they replace the head bolts too?
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