Engine cutting out - driving me nuts!

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  #1  
Old 08-06-12, 03:16 AM
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Lightbulb Engine cutting out - driving me nuts!

Hi there. I have a Toro Wheel Horse with a Kawasaki liquid-coold V-Twin OHD, FD620D.

The issue is engine will run for a random period (be it 5/15/40 minutes) before sputtering out. I generally cannot restart it immediately: by using choke (even though hot), it may cough and splutter but then dies out with eventually no response to ignition turning engine over (ie will not fire). I have to leave it for 20 minutes or so before I can restart it and off we go again... I have removed spark plugs (se well as replaced) and checked that there is a spark when engine dies, so does not seem electrical. Also, when there is oil around the outside of the top of the carb, I noticed today...

This has been going on for a couple of years, though is now worse. It is driving me nutso .

Anyone have any ideas? Thanks
 
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  #2  
Old 08-06-12, 07:02 AM
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I'm not familiar with that particular engine but it sounds to me like you have a
intake valve not seating properly when the engine gets hot. Pro's will be on soon to further this,i'm sure.
 
  #3  
Old 08-06-12, 05:30 PM
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I have a good bit of experience with that engine. Check the fuel pump. It gets hot and stops pumping. I've seen this happen on several, and with the same symptoms.
 
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Old 08-07-12, 06:55 AM
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thanks big cheese - unfortunately I had already done that (sorry, forgot to say) - any other ideas?
 
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