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    randy1212's Avatar
    randy1212 Posts: 111, Reputation: 1
    Junior Member
    		  
    #1

    Aug 24, 2010, 08:48 PM
    High speed flutter on my jd f725
    I have a john deere f725 front deck mower with a kaw liquid cooled twin cly motor. It seems to have a high speed flutter after a little bit of mowing almost like it is running out of fuel. I have replace filter fuel lines cleaned carb fuel pump is new.. I put in a plug adjusted the valves. Still seems to flutter when the rpms are up... help me please
    DG's Avatar
    DG Posts: 1,375, Reputation: 109
    Ultra Member
    		  
    #2

    Aug 25, 2010, 04:46 PM

    You might check your gas cap and make sure its venting,and make sure there's no tight bends on your fuel lines,
    randy1212's Avatar
    randy1212 Posts: 111, Reputation: 1
    Junior Member
    		  
    #3

    Sep 9, 2010, 01:26 PM

    We did a leak down test on the cylinders and one has 70percent leak I could hear it out the exhaust.. could this cause the flutter? And dying out?
    DG's Avatar
    DG Posts: 1,375, Reputation: 109
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    #4

    Sep 9, 2010, 02:48 PM

    Yes it could ,you might pull your valve covers and check your cleanrance
    randy1212's Avatar
    randy1212 Posts: 111, Reputation: 1
    Junior Member
    		  
    #5

    Sep 10, 2010, 05:06 AM

    I have done that.. just wasent sure if a leaking exhaust valve would cause it to run like that..
    DG's Avatar
    DG Posts: 1,375, Reputation: 109
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    #6

    Sep 10, 2010, 05:42 AM

    Valve could be sticking.something I've found that works real good for sticky vales is SEA FOAM,you can get at about any auto parts place ,
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