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    bmmarcom01's Avatar
    bmmarcom01 Posts: 5, Reputation: 1
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    #1

    Apr 24, 2008, 09:39 PM
    18.5 hp 422707 1264 runs rough after 15 minutes
    My murray rider is running rough after about 10 to 15 minutes under load. I have changed out neddle jet and housing, float. Cleaned carb, check all ports, seem to be clear. Fuel pump rebuilt. New fuel filter... still rough with black smoke... spits and spudders.

    If I turn to left, seems to run rougher, will straighten out a bit once I turn back...

    Any ideas!!
    MOWERMAN2468's Avatar
    MOWERMAN2468 Posts: 3,214, Reputation: 243
    Ultra Member
    		  
    #2

    Apr 26, 2008, 08:04 AM
    still a fuel issue, black smoke = excessive fuel. Go back to the carb.
    bmmarcom01's Avatar
    bmmarcom01 Posts: 5, Reputation: 1
    New Member
    		  
    #3

    Apr 27, 2008, 07:55 PM
    Quote Originally Posted by bmmarcom01
    My murray rider is running rough after about 10 to 15 mins under load. I have changed out neddle jet and housing, float. Cleaned carb, check all ports, seem to be clear. fuel pump rebuilt. New fuel filter....still rough with black smoke....spits and spudders.

    If i turn to left, seems to run rougher, will straighten out a bit once I turn back...

    Any ideas!!!!
    Pulled carb off today and cleaned again. Ran small wire through every opening I could see. Re-assembled... changed oil, lots of fuel in oil.. started and ran good for 10-15 minutes...
    I can seem to find problem... any ideas?
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