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    woodmaster's Avatar
    woodmaster Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 6, 2012, 12:04 PM
    Tractors
    I have an 18 hp briggs and stratton engine. It was not running right. I put in new plugs and I noticed one plug was pretty clean and the other one was black. I had the engine running for a bit then it dies. I felt the plugs and the left plug was cold and the right plug was hot. I do not believe the left plug is working or firing. What could be the problem??

    Mike
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #2

    Jun 26, 2012, 03:09 PM
    Hi,
    If it is an opposed twin, a plug wire has probably failed. If it is a v-twin, then a coil has failed. I assume here that both sides have compression.
    Peace,
    Clarke
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