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how do you prevent 2stroke flooding

Discussion in 'Lawn Mowing' started by causalitist, Oct 9, 2008.

  1. causalitist

    causalitist LawnSite Senior Member
    Messages: 610

    what causes flooding in 2strokes, and how do you guys prevent it? its eating up hours of payrol for me....
  2. All_Toro_4ME

    All_Toro_4ME LawnSite Bronze Member
    Messages: 1,578

    usually, at least in my experience, most engines, 2 cycle or 4, will flood if the choke is left on, theres a bad spark not igniting fuel along with many other reasons. I've found that choking is probably most common to flood the engine.
  3. fool32696

    fool32696 LawnSite Senior Member
    Messages: 993

    I have rarely ever had a flooding problem. I see lots of inexperienced guys idling 2 strokes a lot. If you're not running it hard, shut it down. I also never shut down at idle speed as it loads the motor up on fuel.
  4. LushGreenLawn

    LushGreenLawn LawnSite Silver Member
    Messages: 2,120

    I've never flooded a 2 stroke to the point that 1 or 2 pulls of the rope wouldn't clear it up. I've even done the ol' pull the rope 10 times trying to figure out why it won't start when the kill switch is off, with the choke on, and still cleared out the carb after 2 pulls of the rope and it fired right up!
  5. Richard Martin

    Richard Martin LawnSite Fanatic
    Messages: 14,699

    Proper training usually prevents flooding. If it doesn't work the first time you need to retrain them. No I'm not kidding.
  6. topsites

    topsites LawnSite Fanatic
    Messages: 21,653

    Oh yeah I got tired of that *&$^% lol

    So Here's my standard starting procedure, ALL outdoor engines:

    When I say pull I mean only one time!

    1. Choke ON, WOT, PULL!
    2. Choke OFF, WOT, PULL!
    3. Choke OFF, Idle, PULL!
    Repeat until that beast starts.

    The secret behind the stupid process is steps 2 and 3 allow the engine to rid itself of any excess fuel.

    And it might take a little longer by having to deal with all the settings every single pull,
    but sooner or later they all start, unless something is wrong with them,
    some start first pull, some by the third, whatever but they never ever flood.

    Doesn't matter if the engine is hot or cold or in between, that there is the stupid
    you don't gotta remember nothing else one-size-fits all engine start process for me.

    One exception is there are a few engines that aren't designed to be started on Wot, like my aerator.
    If that is the case, Choke ON + Pull, then Choke OFF + Pull, repeat.
    Last edited: Oct 9, 2008
  7. Weedas_Lawn_Care

    Weedas_Lawn_Care LawnSite Member
    Messages: 180

    iv never had one flood that i was operating and iv had stihl dealers tell me that husquvarna are always flooding when i used mine every day (never had a problem)
  8. dura to the max

    dura to the max LawnSite Silver Member
    from georgia
    Messages: 2,246

    what does WOT stand for? i assume wide open throttle...
  9. Genlandscape

    Genlandscape LawnSite Member
    Messages: 185

    Make sure that machines are upright when stored, this will prevent backflow of fuel that can fill airboxes and flood carbs. This happens with my echoes, if they are lopsided i the racks, they tend to flood.
  10. whoopassonthebluegrass

    whoopassonthebluegrass LawnSite Platinum Member
    Messages: 4,305

    Just carry some matches with you. When you flood it, take off the air filter, open the choke and stick a lit match in the chamber. Cleans it right out. :laugh::laugh::laugh:

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