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engine turns over but does not fire HELP??

Discussion in 'Mechanic and Repair' started by BeautifulBlooms, Apr 19, 2007.

  1. BeautifulBlooms

    BeautifulBlooms LawnSite Senior Member
    Messages: 613

    I serviced my lawn boy push mower last november, added stabilized fuel, replaced the sparkplug, cleaned the air filter, put it into a shed for the winter, pulled it out last week and now it won't fire. I am new to engine repair and maintenance so I am stuck.

    I pulled the sparkplug out to make sure the gap was correct and it was, i pulled out the air filter to make sure no critter had gotten into it, and it was fine.

    How do I know if it is the fuel or the sparkplug? How do I check it is or is not sparking?
  2. Mark in MD

    Mark in MD LawnSite Senior Member
    Messages: 322

    Remove plug, put plug in boot, touch one end of any small steel rod to threads of plug, touch other end to threads of plug cylinder. Hold in place with your bare hand. Pull starter rope with other hand. You should feel a little electrical shock.
  3. khouse

    khouse LawnSite Bronze Member
    Messages: 1,465

    Do you have the kill switch in the on position?
  4. BeautifulBlooms

    BeautifulBlooms LawnSite Senior Member
    Messages: 613

    Gas line is on, there is not kill switch, its a push mower with the bar for starting on the handlebar.

    I think I am not getting spark, and I am not a mechanic at all so I will probably have to take it in to someone. I want to learn about engines however so that I can fix this type of thing in the future, I just dont have the time right now to mess around with it.
  5. MarcSmith

    MarcSmith LawnSite Fanatic
    Messages: 7,157

    Thats just wrong....I have done accidentally on occasion. Its amazing just how much a small spark can surprise ya....

    You want to find out if you have spark. If you have no spark, then all the fuel in the world won't do you any good...There has to be some sort of engine cutoff switch that could have "gone" bad over the winter or the coil has gone south...
  6. Brett's Cutting Edge

    Brett's Cutting Edge LawnSite Member
    from novi
    Messages: 150

    check spark if its bad replace to coil or check ur kill switch make sure it is also getting fuel
  7. EMJ

    EMJ LawnSite Member
    Messages: 200

    Remove air cleaner, spay a shot of Starting Fluid into carb (small amount), try to start. If it fires and runs for a second it is fuel. If not it is Spark or possibly mechanical. If it Ran before you put it away I would say spark.

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