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    SANDLAKEFIXER's Avatar
    SANDLAKEFIXER Posts: 3, Reputation: 1
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    #1

    Jun 21, 2008, 07:23 PM
    Briggs & Stratton 18 HP Vanguard
    I am trying to fix a Toro 3100 Triplex mower used on a golf course.
    The machine has about 2500 hours on it.
    It is powered by a I am trying to fix a Toro 3100 Triplex mower used on a golf course.
    The machine has about 2500 hours on it.
    It is powered by a Briggs & Stratton 18 HP Vanguard V-Twin

    The engine is backfiring and flooding out.
    The spark plugs are black and sooty.
    You can see the gas coming out of the carburetor

    The engine has a new fuel pump .

    I have cleaned the carburetor and am fairly competent it is free of dirt.
    Its almost like the float is sticking..

    What can be wrong? V-Twin

    The engine is backfiring and flooding out.
    The spark plugs are black and sooty.
    You can see the gas coming out of the carburetor

    The engine has a new fuel pump .

    I have cleaned the carburetor and am fairly competent it is free of dirt.
    Its almost like the float is sticking..

    What can be wrong?

    Bob

    <moved>
    SkipB's Avatar
    SkipB Posts: 41, Reputation: 2
    Junior Member
    		  
    #2

    Jun 22, 2008, 06:30 AM
    If the engine is backfiring, it may be a timing or valve problem. Check the flywheel key to make sure it is not sheared. Check the valves for proper adjustment.
    SANDLAKEFIXER's Avatar
    SANDLAKEFIXER Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Jun 22, 2008, 10:18 AM
    Thank SkipB
    I will chech it out Monday
    Bob
    MOWERMAN2468's Avatar
    MOWERMAN2468 Posts: 3,214, Reputation: 243
    Ultra Member
    		  
    #4

    Jun 23, 2008, 04:49 AM
    Skip is on the right track I believe.
    SANDLAKEFIXER's Avatar
    SANDLAKEFIXER Posts: 3, Reputation: 1
    New Member
    		  
    #5

    Jun 23, 2008, 02:50 PM
    Quote Originally Posted by SkipB
    If the engine is backfiring, it may be a timing or valve problem. Check the flywheel key to make sure it is not sheared. Check the valves for proper adjustment.
    :) You are a good man SkipB

    You were correct on the valves.

    The valve gap on the 2 exhaust vales were set at .015 & .018 and the intakes were .010 & .008.
    They call for .004/.006. I reset everything and it run great.

    Thanks from the sandlakefixer
    claudelewis's Avatar
    claudelewis Posts: 1, Reputation: 1
    New Member
    		  
    #6

    Apr 10, 2013, 03:42 PM
    It evidently wasn't the case here, but I thought I'd pass on the following (limited) experience:
    I had a similar situation with the same engine (mounted in an Argo ATV) -- the problem turned out to be a detached magnet on the flywheel...
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