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lawnmower almost fixed (maybe)

Discussion in 'Members Lounge' started by mstechca, Jun 24, 2005.

  1. mstechca

    mstechca New Member

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    This is interesting.

    I did an electricity test on my lawnmower with the following scenarios:

    I connected the spark plug socket to a vice grip that conducts electricity. then I connected it to the gas tank. when I pulled the cord on the lawnmower, I saw sparks fly off the gas tank about every 1/2 a second. This makes me think that the magneto circuit is working properly.

    When I replaced the vice grip with the spark plug and left the other end of the spark plug hanging, and I tried starting the engine, no sparks came out. Do I need to connect the other end of the spark plug to something to test it?

    I don't have a spark plug tester. Is there any way I can make a say a 6 or 9V circuit that tests spark plugs?
     
  2. chiba

    chiba New Member

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    Probably not a good idea to induce a spark around your petrol tank :roll:

    You have the plug removed from the engine and still attached to the ht lead right? then just rest the threaded part of the plug against the engine or somewhere free of paint. You should notice a spark between the plugs end electrodes. Didn't you say it was a new plug? it should be ok providing you have not dropped it on the ground and not opened the gap too much, about .025" should suffice. Why did you start a new thread?
     
  3. ante

    ante New Member

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    Sorry for jumping in here but I like to know was the spark white/light blue or red/orange coloured?
     
  4. dave

    Dave New Member

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  5. mstechca

    mstechca New Member

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    The spark was light blue.

    After checking everything I can think of, the stupid lawnmower doesn't work! When I pull the cord hard, It sounds as if the engine wants to run, but it dies down instantly.

    The best I can get when I tried starting it is one or if I am lucky, two pops.

    Why doesn't it just give me several pops, and turn on like it used to?
     
  6. plot

    plot New Member

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    Lawnmowers are stupid simple.

    Did you drain all the gas out of it before you let it sit in the garage all winter? Or did you let it sit in there basically turning to turpintine and ruining the carbrator and what not?

    the choke broken? (if there is one), and is the primer working properly? (if there is one... normally says "push 3 times before starting mower")
     
  7. mstechca

    mstechca New Member

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    The gas tank was if anything, 1/4 full throughout winter.

    If that was the case, then why does my lawnmower almost start now, and it worked well one week ago?
     
  8. plot

    plot New Member

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    eh, does it take straight gasoline, or do you gotta mix something in with it? maybe you put to high of octane gas in it and blew a seal or something...
     
  9. mstechca

    mstechca New Member

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    It takes gas and oil, but they are not supposed to be mixed. Oil goes in one section, gas goes in another.
     
  10. plot

    plot New Member

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    My suggestions: new carborator... and pull harder :D
     
  11. chiba

    chiba New Member

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    I still think he'd be better off with a goat :)
     
  12. Phasor

    Phasor Member

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    If goats unavailable, alpacas work just as well.
     
  13. bryan1

    bryan1 Well-Known Member

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    Eh Chiba,
    I've got 5 goats and those ****** things eat everything but grass. If the bloke I rang last week doesn't come and pick em up then they'll be eatin a bullet for dinner. By the way if your in SA do you want them ????

    Cheers Bryan
     
  14. ante

    ante New Member

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    Try some of this, remove the air cleaner and give it a small dose!
     

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  15. chiba

    chiba New Member

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    Lol, ok then, get a couple of sheep to do the lawn and let the goats prune the trees, garden and clothesline :)


    ante, sorry mate, couldn't resist :)
     

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  16. mstechca

    mstechca New Member

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    I have a gut feeling that I over-flooded my lawnmower interior in its entirety.

    I will have to consistently pull the cord unless there is a better solution.
     
  17. jrz126

    jrz126 Active Member

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    My dads friend had a problem with a 2 stroke weedwacker. Had spark and everything but it wouldnt run. Turns out the key that holds the flywheel to the shaft was sheared off and the timing was off.

    Have you tried adjusting the carb?
     
  18. mstechca

    mstechca New Member

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    It is working now.

    One neighbor came and pulled it a few times extra hard. It seemed that it was flooded too much with oil and gas. I also bought an engine cleaner which did the trick.
     
  19. ante

    ante New Member

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    Hi cheba,

    Lol. If you eat enough beans you don’t have to buy a can, just aim with precision or use a funnel backwards! :shock:
     
  20. Phasor

    Phasor Member

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    To fix a flooding, remove spark plug, allow excess fuel to evaporate from combustion chamber for a few minutes, perhaps blow it out with compressed air, replace spark plug, try again.
     

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