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    tugger22's Avatar
    tugger22 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Feb 15, 2010, 07:09 AM
    I have a 14.5 b&s Sears lawn tractor it starts easy and runs fine until I engage the
    I have a 14.5hp B&S powered SEAR LAWN TRACTOR, it starts easy and runs fine until
    I engage the mower deck :ie UNDER LOAD, within a minute or two it starts smoking very
    Badly.
    Upon inspection I find OIL in the Air filter plenum, if I wipe it dry and restart, it repeats.
    Is this caused by leaking valves, worn rings,or some engine adjustment.
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #2

    Feb 15, 2010, 07:13 AM

    Hi,
    Could be a bad breather. Something is pressurizing the crankcase above normal. First I think I would check for a blown head gasket, one leaking into the crankcase but not into the atmosphere.
    Peace,
    Clarke
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