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    jebidiahsuicide's Avatar
    jebidiahsuicide Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jul 22, 2009, 07:07 PM
    2003 3.75HP Murray Push Mower Using Way Too Much Fuel
    I have a 2003 Murray push mower model 220011X92A that I bought new back in 2003/2004. Never really had any problems until last week (July 2009). The mower started sputtering and the engine was revving up and down in a regular rhythm. I also noticed that it started using gas like never before. Before the problem started I could mow a large lawn with 1 tank of gas and still have fuel left, after the problem started I can't finish my back yard without refilling the gas tank 2-3 times. It seems obvious that too much fuel is making it into the engine, but I'm not sure where to start to look for the problem.
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #2

    Jul 22, 2009, 07:12 PM

    Hi,
    Look far a clogged or soaked air filter first.
    Peace,
    Clarke
    jebidiahsuicide's Avatar
    jebidiahsuicide Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Jul 22, 2009, 07:30 PM
    I neglected to mention I did take the air filter off for a short time, and while it was off I opened the throttle all the way for a bit. The engine ran better, but still sputtered and would sometimes die. The air filter wasn't soaked and seemed fine.
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #4

    Jul 22, 2009, 07:37 PM

    Hi,
    Not a comon thing but I would say you need to replace the diaphrgm between th carb and tank. I would say it has developed a pinhole that allows the engine to draw fuel through it by vacuum.
    Peace,
    Clarke
    jebidiahsuicide's Avatar
    jebidiahsuicide Posts: 3, Reputation: 1
    New Member
    		  
    #5

    Aug 8, 2009, 08:08 PM

    Crigby, that did it. I ordered a diaphragm online, replaced it, and mowed the lawn the same day. Thanks much!
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