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Kohler Quits After 20 Min.


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#1 Chris in PV OFFLINE  

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Posted April 30, 2013 - 03:08 PM

Hi all, new to this forum and wondering if anyone can help me figure out what's going on. I have an older Sears mower with the Kohler 20 hp. Mower wouldn't start this spring so I rebuilt the carb, replaced the plugs and fuel filter and air filter as well . Started up great and ran like a top. Runs for about 20 minutes then dies. Won't restart for a couple of days, then does it all over again. Does this sound like a fuel pump issue or plugged lines? Or...? Any tips will be greatly appreciated! Thanks!

 

 



#2 olcowhand ONLINE  

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Posted April 30, 2013 - 03:42 PM

Sounds like a bad ignition coil to me.  A coil that is on it's way to the grave, it will usually do fine till it gets hot inside, then the spark breaks down.  


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#3 HowardsMF155 OFFLINE  

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Posted April 30, 2013 - 04:15 PM

Sounds like a bad ignition coil to me.  A coil that is on it's way to the grave, it will usually do fine till it gets hot inside, then the spark breaks down.  

I very much agree with Daniel on this one.  Had a Kohler that gave me fits thinking it was carb related.  Try new coil and points and plugs.



#4 John@Reliable OFFLINE  

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Posted April 30, 2013 - 04:30 PM

I agree with coil, test it, could also be "crap" in tank, blocked air vent (gas cap), fuel line.



#5 JDBrian OFFLINE  

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Posted April 30, 2013 - 05:09 PM

When it quits, test the spark. It sounds like an ignition issue to me as well. Frustrating for sure! 



#6 HDWildBill OFFLINE  

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Posted April 30, 2013 - 06:22 PM

As Brian said run it until it quits, then test to see if you have spark.  If you do have spark then check to see if you are getting you are getting fuel out of the tank.  If it's an electrical problem I would think as soon as it cooled down it would start,  I'm more inclined to think it is trash in the tank since it takes a couple of day's to start again.  It get's plugged up and it take a few days for the fuel to seep back to fill up the bowl and line's.

 

Kind of reminds me of the old Ping pong ball trick we used to play.


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